Santo Domingo is the capital of the Dominican Republic and the oldest European city in the Americas. The old city is on the UNESCO World Heritage List. The most important tourist destination of the city is the Zona Colonial or Colonial Zone, on the western bank of the river and facing the Caribbean Sea. To the west of the Zona Colonial lies Gazcue, one of the city's oldest neighborhoods, filled with old Victorian houses and tree-lined streets. The city's waterfront George Washington Avenue, knows as "El Malecon," borders the Caribbean Sea and attracts many tourists because of its hotels, casinos, palm-lined boulevards and monuments. Surrounding the Gazcue area you will find the Palacio Nacional (seat of the Dominican government), the National Theater, the Museums in the Plaza de la Cultura, and the Palace of Fine Arts.