National Historic Houses Day 2026: Italy's largest open-air museum opens its doors

When: Sunday 24 May 2026. For one day hundreds of private historic houses across Italy will welcome visitors with free access.

This event offers a chance to explore a widespread heritage of villas, castles, frescoed palaces, rural estates and secret gardens. It promotes the protection and public enjoyment of privately owned monuments that are often closed to visitors.

What to expect in 2026

The theme for the 16th edition is "Guardians of the future. A living heritage for shared value", stressing the collective responsibility to preserve and enhance these sites for local communities and future generations. Recent editions involved hundreds of sites and attracted hundreds of thousands of visitors, highlighting the cultural and tourist value of Italy's private heritage.

How visits work

• Entrance is generally free; some houses require advance booking.
• Visit formats include guided tours, free walks and special side events such as open courtyards and themed routes.
• Many residences are still partly lived in by owners, so only selected areas may be open to the public.

Recommended sites and routes

Examples range from lakeside castles to historic urban palaces and private gardens in small towns. Typical highlights include estates like Castello Odescalchi near Lake Bracciano and notable palaces in cities such as Florence. The programme covers regions from the north to the south of Italy.

Practical tips for visitors

• Check the event's official listings for participating houses and access rules.
• Book in advance when required to avoid queues or denied entry.
• Arrive early and follow site regulations (restricted areas, indicated routes, photo bans where applicable).
• Consider public transport or nearby parking in locations with limited space.

National Historic Houses Day is a concrete opportunity to discover Italy's open-air museum and to appreciate the role of private monuments in the country's cultural heritage.