Castle Cornet is a historical castle standing strong for over 800 years. It features five museums and beautiful gardens, showcasing Guernsey's rich maritime history and dramatic events.

Candie Gardens is a beautiful 19th century garden in Saint Peter Port. It offers stunning views of the harbor and nearby islands, along with a café, museum, and art galleries.

Sausmarez Manor is a historic house in Guernsey, home to the de Sausmarez family for over 800 years. Visitors can explore the manor's subtropical garden, sculpture park, and enjoy guided ghost tours led by the Seigneur du Sausmarez.

La Vallette Underground Military Museum showcases exhibits from WWII in a network of tunnels built by Germans. Visitors can see wartime memorabilia, including medals, weaponry, and unique crafts made by Guernsey inmates at the Biberach concentration camp.

The German Military Underground Hospital is a historical site that represents the German Occupation of the Channel Islands. This extensive tunnel system, dug by slave laborers, spans about 7,000 square meters and serves as a reminder of the lives intertwined with its construction.