The royal mint and colonial wealth — Potosí's grandest sight is the Casa Nacional de la Moneda, the royal mint where the silver of the Cerro Rico was struck into coins that circulated across the world — a vast, fortress-like building, now a superb museum, with its old minting machinery, colonial art and the story of the money that fuelled an empire. Around it, the churches (San Lorenzo's carved mestizo-baroque façade, the cathedral, San Francisco) and mansions show the extravagant wealth the silver bought. Touring the mint and the churches is to grasp how one Andean mountain shaped global history.
The Cerro Rico and its terrible history — Looming over everything is the Cerro Rico, the "rich mountain," from which centuries of silver — and later tin — were dug at a staggering human cost: countless indigenous forced labourers and enslaved Africans died in its tunnels and refineries, and it is sometimes called "the mountain that eats men." The mountain is still mined today, by cooperatives in dangerous, primitive conditions. Its presence over the city is inescapable and sobering, and understanding its history is central to understanding Potosí — a place where beauty and suffering are inseparable.
Visiting the mines — with real caution — Some travellers take tours into the working mines of the Cerro Rico, guided by former or current miners, to see the conditions first-hand and meet the workers. It's a powerful, unsettling experience — but it is genuinely dangerous (dust, heat, unstable tunnels, altitude), physically demanding, and ethically complicated, and it's not for everyone. If you consider it, choose a responsible operator run by miners, understand the risks and the discomfort, and go with respect rather than as spectacle — or skip it and learn the history above ground at the mint and museums instead.
High-Andes life at the top of the world — Potosí is one of the highest cities on earth, and the altitude shapes everything — the thin, cold air, the intense light, the slow pace. The Bolivian highland culture is strong here: markets of Quechua and Aymara traders, warming highland food, and the surrounding altiplano with its thermal springs (Tarapaya) for a soak. Take the first day very slowly to acclimatise, wrap up warm, and let the stark, high-country atmosphere and the weight of the history sink in. It's a demanding but profound place to be.