Potosí: The City That Fed the Spanish Empire and Never Recovered

Potosí sits at 4,090 meters, higher than any other city on earth. The air is thin. Visitors arrive from Sucre, just four hours south, and feel the altitude immediately: headaches, short breath, a dryness in the throat that water does not fix. Locals chew coca leaves constantly. They offer them to tourists at the bus terminal without ceremony. This is not hospitality. It is practical knowledge passed down through four centuries of living closer to the sky than the sea.

The city does not look like a metropolis anymore. Its population has shrunk from over 200,000 in the colonial peak to roughly 130,000 today. The streets slope uphill in every direction. The buildings are stone and adobe, painted in colonial pastels that have faded under the high-altitude sun. At the center is Plaza 10 de Noviembre, a square surrounded by the Cathedral, the Prefecture, and the Casa Nacional de la Moneda. The mountain dominates everything. Cerro Rico — the Rich Hill — rises directly behind the city, a red-brown cone stripped of vegetation, cratered by centuries of extraction. It looks wounded. It is.

The Mountain That Bankrupted Spain by Giving It Too Much

Cerro Rico produced an estimated 60,000 tons of silver between 1545 and 1825. This single mountain funded the Spanish Empire's wars across Europe, its armadas, its cathedrals, its debts. The first Spanish prospectors arrived in 1545 after an indigenous shepherd named Diego Huallpa built a cooking fire on the slopes and noticed silver ore melting out of the rocks. Within three years, the Spanish had established a mining operation. Within twenty, Potosí was one of the largest cities in the Americas, larger than London or Paris at the time.

The mines are still active. Not by corporations. By cooperatives. Miners — mostly indigenous Quechua and Aymara men — work in medieval conditions using hand tools, dynamite, and coca leaves to suppress hunger and fatigue. The average life expectancy for a Cerro Rico miner is estimated at 45 years. Silicosis, the lung disease from inhaling rock dust, kills most of them. The mountain has been hollowed out so extensively that sections have collapsed. In 2011, a major sinkhole opened on the summit. Geologists warn that the entire upper structure is unstable.

Tourists can enter the mines. Tours depart daily at 9:00 AM from the main gate of the Casa Nacional de la Moneda on Avenida Ayacucho. Operators include Koala Tours and several independent guides, many of them former miners. The standard tour lasts three to four hours and costs 200 to 250 Bolivianos ($29 to $36). You are given a hard hat, a headlamp, rubber boots, and a bandana. The guide provides coca leaves and 96% alcohol, which miners drink as an offering to El Tío — the devil statue inside the mines who owns the minerals and demands tribute.

The tours are not staged for tourists. You walk through active tunnels, stepping over air pipes, ducking under timber supports, watching miners drill by hand. The temperature drops as you descend. The air is thick with dust and diesel fumes from the generators. Guides tell you where to stand and when to be quiet. They point out the difference between the older colonial tunnels, barely shoulder-width, and the wider modern shafts. Some guides worked these same tunnels for twenty years before their lungs gave out. They speak plainly about the deaths they have witnessed. This is not adventure tourism. It is a visit to a workplace where the conditions have not fundamentally changed since the 16th century.

The Mint That Turned Silver into Currency

The Casa Nacional de la Moneda occupies an entire city block on the northeast side of the plaza. It operated as the Spanish Empire's primary mint from 1572 to 1773, producing the silver coins — pieces of eight — that became global trade currency. The current building dates to 1753, replacing an earlier structure that could not handle the volume.

The two-hour guided tour (Spanish only unless arranged in advance; English guides available through Koala Tours and some operators) takes you through the original courtyards, the foundry where silver was melted in clay ovens, and the rooms where hydraulic presses — powered by a system of wooden gears and axles designed by Spanish engineers — stamped coins. The machinery is still in place: wooden beams the size of ship masts, iron screws, stone counterweights. In the 18th century, this was the most advanced industrial complex in the Americas.

The museum also displays the mita system in detail. Under this forced labor program, indigenous communities across the Andes were required to send one-seventh of their adult male population to work in the mines for a year. The figures are documented: 30,000 to 50,000 conscripted laborers in the mines at any given time during the 17th century. Mortality rates were catastrophic. The museum does not soften this. One room contains a full-size replica of the "human-powered wheel," a wooden cylinder turned by indigenous laborers walking inside it, used to lift ore and pump water before the introduction of hydraulic power. It looks like a device from a torture museum. It functioned as one.

Admission costs 40 Bolivianos ($5.80) for foreigners. The museum is open Tuesday through Sunday, 9:30 AM to 12:30 PM and 3:00 PM to 6:30 PM. Closed Mondays. Tours in English should be booked in advance through your hotel or a tour operator; walk-in English availability is inconsistent.

The City the Silver Built

Potosí's historic center is a UNESCO World Heritage site, and the designation is deserved despite the city's current poverty. The architecture reflects the wealth that once passed through. The Cathedral on Plaza 10 de Noviembre, rebuilt in the 19th century after the original collapsed, has an interior of carved altars and gold leaf that contrasts sharply with the city's dusty streets. The Church of San Lorenzo, three blocks west, has an exterior carved in the mestizo baroque style — indigenous artisans interpreting European religious imagery with local symbols, including tropical fruits and Andean animals worked into the stone facade.

The Convento de Santa Teresa, four blocks south of the plaza, operates as a museum of colonial religious life. It was founded in 1685 as a Carmelite convent for the daughters of wealthy mine owners. The nuns lived in permanent seclusion, communicating with visitors through a rotating wooden cylinder built into the wall. The museum preserves their cells, kitchen, pharmacy, and a collection of colonial religious paintings, including several attributed to Melchor Pérez de Holguín, the most significant Bolivian painter of the baroque period. Admission is 30 Bolivianos ($4.35). Hours are 9:00 AM to 12:00 PM and 3:00 PM to 6:00 PM, Tuesday through Saturday.

La Merced church, on the corner of Calle Bolívar and Quijarro, has a less obvious attraction: its rooftop. The attached cafe opens to visitors who pay the 15 Boliviano ($2.20) entrance fee to the church museum. From the roof, you look directly across at Cerro Rico. The contrast is unavoidable. The church's ornate tower and the mountain's stripped, cratered face sit in the same frame, four centuries of history compressed into a single view.

Callejón de las Brujas — the Alley of the Witches — runs behind the Iglesia de San Juan de Dios. It is not a tourist fabrication. Herbalists and spiritual practitioners have sold remedies, amulets, and ritual items here since colonial times. The street stalls offer dried llama fetuses (used in foundation ceremonies for buildings), bundles of herbs, coca leaves, and soaps carved into the shape of body parts for ritual healing. It functions as a working market, not a performance. Photographing individual vendors without asking is considered disrespectful.

Eating and Sleeping at Four Thousand Meters

Potosí is cheap. A set lunch — soup, main course, drink — costs 15 to 25 Bolivianos ($2.20 to $3.60) at places like Chuquima market or the restaurants along Calle Sucre. The food is heavy: quinoa soup, peanut soup (sopa de maní), grilled trout from high-altitude lakes, salteñas (meat-filled pastries), and plate after plate of potatoes. The altitude affects digestion. Meals sit heavily. Alcohol hits harder. The coca tea served in every cafe is not a novelty. It genuinely helps with nausea and headaches.

Koala Den, a cafe and tour operator on Calle Linares near the plaza, serves breakfast, coffee, and simple meals. It also functions as the main information point for backpackers. The 4060 Cafe, attached to the Hostal Colonial on Calle Tarija, has reliable WiFi and decent coffee. For a proper sit-down dinner, El Mesón on Calle Hoyos serves Bolivian and international food in a converted colonial house. Main courses run 60 to 90 Bolivianos ($8.70 to $13).

Accommodation is similarly inexpensive. Hostal Colonial Potosí, on Calle Tarija, has clean private rooms with shared or private bathrooms for 120 to 200 Bolivianos ($17 to $29) per night. It includes a basic breakfast and has a rooftop terrace with Cerro Rico views. Virreyes Hotel, on Avenida Camacho, is simpler but clean, with rooms from 80 Bolivianos ($11.60). For a step up, Hotel Museo Cayara, 20 minutes outside the city in a restored colonial hacienda, charges 400 to 600 Bolivianos ($58 to $87) and includes a museum of colonial artifacts.

Getting There and Moving On

Most travelers arrive from Sucre, the constitutional capital four hours south. Buses run every hour from Sucre's terminal for approximately 20 Bolivianos ($2.90). El Dorado and several smaller companies operate the route. The road is paved but winding.

From Uyuni, the gateway to the salt flats, the journey takes three hours on a paved road. Buses cost around 50 Bolivianos ($7.25) and depart in the morning. From La Paz, the night bus takes 10 to 12 hours and costs 70 to 120 Bolivianos ($10 to $17) depending on the seat type. El Dorado and Trans Copacabana run departures around 8:30 PM and 10:00 PM. The road is mostly paved but delays are common. Bring warm clothing. Night temperatures at this altitude drop below freezing even in summer.

Potosí does not have an airport. The nearest is in Sucre.

What to Skip

Skip the packaged "cultural shows" marketed to tour groups. They are recent inventions, not traditional events. Skip attempting the mine tour if you have respiratory issues, heart conditions, or serious claustrophobia. The altitude, dust, and confined space are genuine medical risks. Skip buying silver jewelry from street vendors claiming it came from Cerro Rico. Most is imported. Skip staying longer than two full days unless you have acclimatized properly. The altitude exhausts even fit visitors.

Practical Notes

The altitude is the defining factor of any visit. Spend your first day walking slowly, eating lightly, and drinking coca tea. Do not plan strenuous activity until your second day. The sun is intense at 4,090 meters. UV exposure is roughly 40% higher than at sea level. Sunscreen and a hat are not optional.

Potosí is safe by Bolivian standards, but the usual rules apply: avoid unlit streets after dark, keep phones concealed, and use registered taxis. The city is compact. The historic center can be crossed on foot in twenty minutes. Most visitors stay two days — one for the mint and the city, one for the mines.

The city is poor. Infrastructure is strained. Power cuts happen. Hot water is inconsistent. This is not a destination for travelers who require hotel-chain reliability. It is a destination for travelers who want to understand what 300 years of extraction looks like when the resource runs out and the empire moves on. Cerro Rico is still bleeding silver in quantities too small to make anyone rich. The miners keep working. The city keeps breathing thin air. The history is not in the past here. It is underground, in active tunnels, right now.