Republic Square, located in the heart of Yerevan, is considered one of the most beautiful town squares in the world. It is known for its singing fountains and a magnificent stone mosaic carpet. The area is built over three thousand years of ancient ruins. The surrounding buildings are Marriott Hotel, the building of the Ministry of Foreign Affairs, History Museum and the National Art Gallery, the government building and the post office building, built in the traditional red tuff. In the evenings, Republic Square is transformed into an outdoor concert hall. Concerts always end with colorful fireworks.