"Havana Vieja was founded by the Spanish in 1519 in the natural harbor of the Bay of Havana. It became a stopping point for the treasure laden Spanish Galleons on the crossing between the New World and the Old World. In the 17th century it was one of the main shipbuilding centers. The city was built in baroque and neoclassic style. Many buildings have fallen in ruin in the later half of the 20th century, but a number are being restored. The narrow streets of old Havana contain many buildings, accounting for perhaps as many as one-third of the approximately 3,000 buildings found in Old Havana. It is the ancient city formed from the port, the official center and the Plaza de Armas."
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Plaza de Armas is now the main touristic square. The origin of its name is military, since from the end of the 16th century the ceremonies and the military events took place here.
If you pay attention, you will notice that the road is entirely made of wood.