Belem Tower, Portugal

Built on the northern bank of the Tagus river in Lisbon, in the early years of the 16th century, the Belem Tower acted as a defense structure to protect the Portuguese capital. Due to an earthquake that took place in 1755, the location of the Belem Tower shifted. Several Portuguese explorers would begin their journeys of discovering new routes and lands from this tower. Also called the ‘Tower of St. Vincent’, this fortified tower is also a UNESCO World Heritage site.

This tower ________.