Viewed at night, Belem Tower, or the Tower of St. Vincent, was the starting point for many voyages of discovery. Built in 1515 as a fortress to guard Lisbon's harbor, it is a symbol of Portugal.

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Viewed at night, Belem Tower, or the Tower of St. Vincent, was the starting point for many voyages of discovery. Built in 1515 as a fortress to guard Lisbon's harbor, it is a symbol of Portugal.