Castell de Bellver is a unique circular castle located on a hill overlooking Palma, the capital of Mallorca, Spain. Built in the 14th century, it was commissioned by King James II of Mallorca as a royal residence. The castle features a distinctive round design, with three towers and a central courtyard, making it one of the few circular castles in Europe. The castle is surrounded by a beautiful forest and offers stunning views of the surrounding landscape and the Mediterranean Sea. Today, Castell de Bellver serves as a museum and a popular tourist attraction, showcasing the history of Mallorca and its architectural significance.