Palacio Portales is the most extraordinary building in Cochabamba — a European-style mansion built in 1915 by tin magnate Simón Patiño, who at his peak was one of the wealthiest individuals on earth. The building draws on French, Italian, and Moorish influences simultaneously, with lavish interiors of marble, gilded plasterwork, and hand-painted ceramic tiles imported from Europe. The surrounding gardens, laid out in French formal style, are among the best maintained in Bolivia.
The palace is now run as a cultural centre and is open to the public for guided tours (20 bolivianos). Tours run on weekday mornings and afternoons; check at the gate for times. The interior — ballrooms, library, a winter garden — gives a vivid sense of the extraordinary wealth that Bolivia's mineral boom generated for a tiny elite while the country around them remained desperately poor.