05. Torre de Belem, Lisbon
This place is the most loved historical monument in the country. It is a symbol of Age of Discovery, and the voyages of exploration undertaken in the 15th and 16th centuries. This monument was originally built to be a fortress to defend the River Tagus in 1521. It is widely regarded as the masterpiece of military architecture. Designed in the Manueline style by Francisco de Arruda, the façade is a confection of beautifully carved stone, typified by maritime motifs such as twisted rope and the armillary sphere. The tower’s cultural significance is such that UNESCO has listed it as a World Heritage Site.