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Sightseeing

El Zanjón de Granados

📍 El Zanjón de Granados, Buenos Aires, Argentina
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★★★★☆

Introduction

El Zanjón de Granados is an 18th-century colonial house in San Telmo whose restoration uncovered an underground network of tunnels — remains of the early drainage channels ('zanjón') and passages of the young city. Now a museum, it lets visitors descend beneath the house to follow the brick-vaulted tunnels and trace Buenos Aires' earliest urban history.

Highlights

1
Underground tunnels
Walkable brick-vaulted remains of 18th-century drainage and passages.
2
Colonial house
A restored 18th-century home with courtyard, niches and old brickwork.
3
Accidental find
Uncovered in 1985 during restoration — a celebrated case of urban archaeology.

🛈 Practical Info

LocationDefensa 755, San Telmo, Buenos Aires, Argentina
Time neededAbout 1 hour
AdmissionGuided tours charged (confirm on site)

💡 Tips

The tunnels are visited with a guide — ask about English tours in advance.
Underground stays cool, a good option on hot summer days.
Same block as Plaza Dorrego's Sunday antique fair.

FAQ

Any practical tips for visiting El Zanjón de Granados?

The tunnels are visited with a guide — ask about English tours in advance. Underground stays cool, a good option on hot summer days.