Some of statues and monuments are nationalist, such as the West Irian Liberation Monument, the Tugu Tani, the Youth statue and the Dirgantara statue. Some statues commemorate Indonesian national heroes, such as the Diponegoro and Kartini statues in Merdeka Square. The Sudirman and Thamrin statues are located on the streets bearing their names. There is also a statue of Sukarno and Hatta at the Proclamation Monument at the entrance to Soekarno–Hatta International Airport.