European Heritage Days is an annual event held across Europe on the third weekend of September, offering free access to historical sites, museums, monuments, and government buildings that are usually closed to the public. Launched in 1984, the event highlights cultural heritage through guided tours, special exhibitions, and interactive workshops, allowing visitors to explore everything from medieval castles to private mansions and iconic landmarks. It’s a unique opportunity to discover hidden treasures, learn about history, and celebrate Europe’s rich cultural legacy.