Picture this: July 24, 1911. A 35-year-old Yale lecturer named Hiram Bingham is scrambling up a steep, jungle-choked mountainside in the Peruvian Andes. The air is thin and cold. Vines grab at his boots. Below him, the Urubamba River thunders through a canyon so deep it seems to split the world in two. He’s been walking for days, led by whispers from local farmers about “some old ruins” up on the ridge. His guide is a local police sergeant. His mule has nearly tumbled off a cliff twice. He’s exhausted, soaked, and probably wondering if this whole expedition is a fool’s errand.
Then, he turns a corner.
And there it is: a cascade of stone terraces glowing in the morning sun, climbing a saddle between two sharp peaks. Behind them, mist boils up from the cloud forest below. Ahead, a forest of granite walls, doorways, and temples—so perfectly fitted that not even a knife blade can slip between the stones. The site is massive, silent, and completely unknown to the outside world.
Hiram Bingham hadn’t found just another ruin. He had stumbled into one of the greatest archaeological discoveries of the 20th century. The world would come to know it as Machu Picchu.
But here’s what most guidebooks won’t tell you: Bingham wasn’t actually looking for Machu Picchu. He got lost. And everything you think you know about him—the “real Indiana Jones,” the heroic discoverer—needs a second look. Let me walk you through what really happened, what he found, and why this cloud-draped citadel still takes your breath away more than a century later.
The Backstory: A Historian Who Got Lucky
Before we climb that mountain with Bingham, let me introduce you to the man himself.
Hiram Bingham III was born in Honolulu in 1875, the grandson of Protestant missionaries. He wasn’t an archaeologist by training—he was a historian who specialized in South American revolutions. But like many academics of his era, he had a romantic streak and a thirst for adventure.
In 1908, Bingham attended a conference in Chile and heard stories about “lost cities” in the Andes. The Spanish conquistadors had written about a mysterious Inca stronghold called Vilcabamba, the last refuge of the resistance after the Spanish conquest. By 1911, no one knew where it was. Bingham became obsessed with finding it.
The Yale Peruvian Expedition of 1911 was his third attempt. His official goal was to find Vilcabamba. Instead, he found something far more spectacular—and completely unexpected.
Let me pause here, because this matters: Bingham didn’t “discover” Machu Picchu in the sense that no one knew it existed. Local farmers had been living on and around the mountain for generations. A Peruvian landowner named Melchor Arteaga had shown the ruins to others before. And two German engineers, J. M. von Hassel and Augusto Berns, had supposedly visited the site in 1867—though they left no detailed records. But Bingham was the first to document it scientifically, photograph it, and announce it to the world.
He also, to put it gently, took a lot of stuff with him when he left. More on that later.
The Climb: How He Actually Found It
Let me set the scene in more detail, because the real story is even better than the legend.
On July 23, 1911, Bingham and his team set up camp at Mandor Pampa, a small settlement at the foot of a steep mountain ridge called Machu Picchu (Quechua for “Old Peak”). An adjacent peak was called Huayna Picchu (“Young Peak”). They had heard vague rumors about ruins on the ridge, but so far, no one had mentioned anything impressive.
That evening, Bingham met a local farmer named Melchor Arteaga. Arteaga casually mentioned that there were “some fine ruins” on the mountain above. When Bingham asked if anyone had ever explored them, Arteaga shrugged. No. Not really. Bingham paid him a sol (about 50 cents) to guide him the next morning.
Here’s a quote from Bingham’s own journal, describing that morning:
“It was a bright day, with clouds drifting across the mountain peaks. We climbed a very steep hill, partly wooded, partly grassy. The path was narrow and slippery. For an hour and a half, we made our way upward, sometimes on hands and knees.”
They reached the top around noon. A small hut stood on the ridge, occupied by two local farmers, Richarte and Alvarez, who had been using the ancient terraces to grow maize and potatoes. They had no idea they were living inside one of the most sacred sites in the Americas.
Bingham later wrote:
“I was practically in a state of collapse from exhaustion. But suddenly I found myself confronted with walls of white granite beautifully built. It seemed like an unbelievable dream.”
What he saw first was the principal temple district—the Intihuatana stone, the Temple of the Three Windows, and the massive central plaza. He immediately knew he had found something of world importance. He spent the rest of the day taking photographs and making rough sketches. He didn’t have time to explore the entire site. That would take years.
And here’s a haunting detail: Bingham’s photographs show the site covered in dense jungle. Trees grew through the walls. Vines smothered the terraces. It took four full expeditions—spanning until 1915—just to clear the vegetation enough to understand the layout.
What He Actually Found: The Architecture of Clouds
Now let’s talk about the place itself, because Machu Picchu is not just another set of ruins. It is an architectural miracle, and the more you learn about how it was built, the more impossible it seems.
The citadel sits at 7,970 feet above sea level—lower than Cusco but dramatically perched between two jagged peaks. The Urubamba River winds around it in a massive horseshoe bend, creating a natural defensive position so perfect you’d think the Incas had designed the landscape themselves. They didn’t. They just recognized genius when they saw it.
The site contains more than 200 structures, including temples, storage buildings, aqueducts, fountains, and an astronomical observatory. But the most astonishing feature isn’t the buildings—it’s how they’re fitted together.
The Incas practiced a technique called ashlar masonry. They cut granite blocks so precisely that no mortar was needed. The blocks interlock at angles, sometimes with more than 30 faces per stone, creating walls that have survived five centuries of earthquakes, heavy rain, and neglect. You cannot slide a piece of paper between them. Try that with Roman concrete.
The famous Intihuatana stone—which means “Hitching Post of the Sun” in Quechua—is a carved rock pillar that functioned as a solar observatory. During the winter solstice, the stone casts no shadow at all, marking the moment when the sun “sits” on the pillar. The Inca believed the stone held the sun in place to prevent it from falling from the sky. Today, it’s one of the few such stones that survives intact—most were destroyed by Spanish priests who considered them pagan idols.
The agricultural terraces are another marvel. There are more than 700 of them, cut into the steep mountainside like a staircase for giants. They did more than grow crops. They prevented erosion, improved drainage, and created microclimates—each terrace was slightly warmer or cooler than the one above it, allowing the Incas to grow different crops at different elevations. It was, in essence, a form of ancient genetic engineering.
A drainage system of granite channels still carries rainwater through the city with remarkable efficiency. Modern engineers have studied it with admiration: the channels slope at exactly the right gradient to prevent silting, and the water flows through a series of fountains before emptying into the agricultural sector. No pumps. No metal pipes. Just gravity and brilliant design.
But Who Lived There? And Why Did They Leave?
Here’s where things get interesting—and where scholars still disagree.
For decades, the conventional story went like this: Machu Picchu was a hidden royal retreat built for the Inca emperor Pachacuti (who ruled from 1438 to 1471). After the Spanish conquest, the site was abandoned, forgotten, and swallowed by the jungle.
That story is partially true but oversimplified. Let me give you the more nuanced version.
Yes, carbon dating confirms that Machu Picchu was constructed around 1450 CE, during Pachacuti’s reign. The architecture is classic Inca imperial style. The site was clearly designed for elite use—it has more temples and ceremonial spaces than residential areas. It was never a large city; at its peak, it probably housed no more than 750 people, and likely far fewer, perhaps 300 to 400 at any given time.
But here’s what we now understand: Machu Picchu was not a secret. The Incas did not “hide” it from the Spanish. They abandoned it for a much simpler reason: smallpox.
When the Spanish arrived in the 1530s, they brought Old World diseases that devastated indigenous populations. Smallpox reached the Andes before the conquistadors did—carried along trade routes by infected individuals. The Inca Empire, already weakened by civil war, collapsed under the weight of disease. At Machu Picchu, the residents likely died or simply left. There was no one left to maintain the terraces, clean the aqueducts, or farm the slopes.
The Spanish never found Machu Picchu because they never looked for it. It was off their main routes, and by the time they might have explored that region, the local population had already vanished. The jungle did the rest.
So no—it wasn’t a “lost city” hidden from the Spanish. It was a functioning imperial estate that became depopulated, overgrown, and forgotten by everyone except the farmers who lived in its shadow.
The Yale Controversy: What Bingham Took
Now we need to talk about the messy part of this story, because it affects how we remember Bingham today.
Between 1911 and 1915, Bingham’s expeditions removed approximately 40,000 artifacts from Machu Picchu—including pottery, jewelry, bones, and tools. He sent them to Yale University for “study.” And for nearly a century, Yale kept them.
Peru, understandably, wanted its heritage back. For decades, the Peruvian government demanded the return of the artifacts. Yale argued that Bingham had legal permission to export them (the laws were looser in 1911) and that the objects were better preserved and studied in New Haven.
The dispute finally ended in 2010, after years of negotiations and a lawsuit. Yale agreed to return the artifacts—all of them. The first shipment arrived in Cusco in 2011, exactly 100 years after Bingham’s discovery. Today, they are housed in a museum at the foot of Machu Picchu, where they belong.
Bingham’s legacy is complicated. He was a brilliant explorer and a gifted writer whose books made Machu Picchu famous. But he was also a product of his era—an era when Western academics felt entitled to remove artifacts from other countries without much thought about ownership or restitution.
For what it’s worth, Bingham never personally profited from the artifacts. He was more interested in fame than fortune. And to his credit, he always insisted that the ruins belonged to Peru. But the removal of those 40,000 objects remains a stain on his legacy.
How Machu Picchu Became a Global Icon
It took a while for the world to catch on. Bingham’s initial articles appeared in National Geographic (which funded his later expeditions). But it wasn’t until the 1940s, when a road was built to the site, that tourism began in earnest. By the 1980s, Machu Picchu was on every bucket list. In 1983, UNESCO designated it a World Heritage Site—one of the first in South America.
Today, the numbers are staggering. More than 1.5 million people visit Machu Picchu every year. That’s about 4,000 per day. The Peruvian government has had to impose strict limits—tickets are capped, timed entry is required, and certain fragile areas (like the Temple of the Sun and the Intihuatana stone) are roped off.
The popularity has created real challenges. The stone pathways are eroding. The mountain slopes are destabilizing. And the small town of Aguas Calientes, built to serve tourists, has grown into a chaotic sprawl of hostels, restaurants, and souvenir stalls. In 2017, UNESCO considered putting Machu Picchu on its “List of World Heritage in Danger.” So far, it remains off the list, but barely.
The Peruvian government has responded with creative solutions. A new airport in nearby Chinchero is controversial—environmentalists worry about increased foot traffic. Meanwhile, a luxury train from Cusco to Aguas Calientes now costs more than $200 round trip. Machu Picchu, which was once free and empty, has become a high-end product.
But here’s the thing: even with the crowds, the selfie sticks, and the Instagram influencers, the place still works its magic. I’ve been there twice, and both times, I found myself just standing still, trying to absorb the scale of what the Incas built. The light changes constantly—one minute the stones are gray and cold, the next they’re glowing gold. The mist rolls in and out, sometimes so thick you can’t see the peak of Huayna Picchu, then clears in seconds to reveal the Urubamba snaking far below. It feels alive.
What Bingham Got Right—And What He Got Wrong
Let me close this section with an honest assessment of Hiram Bingham.
He got the date wrong. He thought Machu Picchu was the legendary Vilcabamba (he was wrong about that too—Vilcabamba was actually a different site, discovered by Gene Savoy in 1964).
He misinterpreted some of the buildings. He called the Temple of the Three Windows a “royal mausoleum” when it was almost certainly a ceremonial space. He assumed the site was primarily defensive, when modern scholars see it as a religious and astronomical center.
But he got the big things right. He recognized the importance of what he found. He documented it thoroughly. He brought it to the world’s attention. And he never lied about the role local farmers played—his journals are full of references to Arteaga, Richarte, and Alvarez.
In 2008, a documentary team used Bingham’s original photographs to recreate his journey. They found that many of the landmarks he described were still there—the same narrow paths, the same slippery rocks, the same stunning view from the “Inca Bridge” where he nearly fell to his death. The jungle had reclaimed some sections, but the bones of the place were unchanged.
Bingham died in 1956, at the age of 80. He never fully got over Machu Picchu. He returned to Peru several times, wrote multiple books about the site, and spent the rest of his career defending his findings against critics. When he was old and frail, he reportedly told a visitor: “Nothing else I ever did was quite as interesting.”
I believe him.
Visiting Today: Practical Realities
If this article has made you want to book a flight to Peru, I don’t blame you. But let me give you some straight talk about visiting Machu Picchu in the 2020s.
First, you need to book in advance—way in advance. Tickets often sell out two months ahead, especially during the dry season (May to September). There are two shifts: morning (6 AM to noon) and afternoon (noon to 5:30 PM). Most people choose the morning shift to see the sunrise, but that also means waking up at 3 AM to catch the bus from Aguas Calientes.
