1. Chillon Castle, also known as Château de Chillon, is a medieval fortress located on the shores of Lake Geneva near Montreux, Switzerland. It is one of the most visited historic sites in Switzerland.

The castle dates back to the 12th century and has a rich history that includes being used as a residence, a fortress, and a prison. It is best known as the setting for Lord Byron’s poem, \"The Prisoner of Chillon,\" which tells the story of François Bonivard, a political prisoner held in the castle.

The castle is surrounded by stunning natural beauty, with views of the lake and the Swiss Alps. Visitors can explore the castle’s various rooms, including the chapel, the dungeon, and the grand halls. The castle also features beautiful frescoes, medieval furniture, and interactive exhibits that bring its history to life.

2. Chillon Castle is open to visitors daily, with varying hours depending on the season. It is recommended to check the official website for the most up-to-date information on opening hours. For inquiries, you can contact the castle at +41 21 966 89 10.

3. Ticket prices for Chillon Castle vary depending on age and the type of ticket you purchase. There are discounts available for students, seniors, and families. Visitors can also purchase combination tickets that include access to other attractions in the area. The castle is easily accessible by public transportation, with a bus stop located nearby and parking available for those arriving by car.