El Zanjón, Buenos Aires
Tel: 54 11 4361 3002
Concierge.com's insider take:
In 1985, local businessman Jorge Eckstein bought a semiabandoned San Telmo town house built in the 1830s by the wealthy Miguens family. While dredging accumulated silt and sludge from the basement, he discovered a network of tunnels dating from the 1580s, the years in which Spanish adventurer Juan de Garay founded Buenos Aires in the Río de la Plata marshland. After a detailed restoration, the labyrinth of ancient dwellings, cisterns, creeks, and courtyards now functions as a private archaeology museum and offbeat event space.—Colin Barraclough
Open Mondays through Fridays 11 am to 4 pm, Sundays 1 pm to 6 pm.