Castello di Rezzonico is a perfectly preserved medieval fortress overlooking Lake Como from San Siro. Built between the 14th and 15th centuries, it offers authentic military architecture and breathtaking views, with the exterior fully visitable despite being a private residence.
- 25-meter main tower for privileged observation over the lake
- Underground dungeons carved into the rock and an armory with original artifacts
- Patrol walkways along the perimeter walls with arrow slits and murder holes
- Spectacular views of the western branch of the lake from Menaggio to Domaso
Events nearby

14th-15th century fortress in San Siro with stone walls, 25-meter tower, patrol walkways, and underground dungeons. Panoramic views of Lake Como and mountains, accessible on foot from the town center.
- Via al castello, Como (CO)
- Open in Google Maps
- View on Google Images Castello di Rezzonico a Como
Good to know
Introduction
Historical Overview
- 10th century: first defensive constructions
- 12th century: under Della Torre control
- 14th century: transition to the Visconti
- 15th century: expansions and fortifications
- Today: visitable historical site
Military Architecture
Unique Panoramas
Why Visit It
When to Go
In the Surroundings
Itineraries nearby
💡 Did You Know…?
Legend has it that the castle was connected by secret underground passages to the nearby Church of San Siro, used by local lords to escape sieges. During restoration work, traces of ancient stables and a still-functioning rainwater collection system emerged. Particularly evocative is the inner courtyard, where nobles are said to have held summer banquets with direct views of the lake.






