The city of San Marino, Città di San Marino in Italian, is the capital of the Republic of San Marino, probably the oldest still existing republic in Italy. It sits on top of 739 metre Monte Titano, the tallest mountain in the region. It is home to 4,000 people and borders the communities of Acquaviva, Borgo Maggiore, Fiorentino and Chiesanuova as well as the Italian municipality of San Leo in the west. Legend has it that San Marino was founded in 301 by Saint Marinus, who allegedly had built a chapel and a church on Monte Titano. Today the city is a centre of tourism, trade and services with many shops and enterprises. About two million tourists visit the city of San Marino every year. Being a toll-free zone, the city is a popular destination for visitors from all over the world.