City Park is adjacent to Heroes' Square and is an important public green space in the center of Budapest, as well as one of the earliest established city parks, with a history dating back to the early 19th century. During the Middle Ages, this area was the hunting ground of King Matthias and was later used as a meeting place for the parliament. The park centers around an artificial lake, which offers boating in the summer and transforms into an open-air ice rink in the winter, with different scenery throughout the seasons. Standing on the island in the lake is Vajdahunyad Castle, built for the 1896 Hungarian Millennium Celebration, which blends various architectural styles including Romanesque, Gothic, Renaissance, and Baroque. The park also brings together facilities such as the Széchenyi Thermal Bath, the Budapest Zoo and Botanical Garden, and the Capital Circus of Budapest, covering a variety of activities including thermal bath experiences, family-friendly tours, and cultural performances.