The Best Sight in Belém, Lisbon

If you see only one historic landmark in Belém, make it this magnificent monastery. This UNESCO World Heritage site is a supreme example of the Manueline style (named after King Dom Manuel I), which represented a marked departure from earlier Gothic architecture. Much of it is characterized by elaborate sculptural details, often with a maritime motif. João de Castilho was responsible for the southern portal, which forms the main entrance to the church: the figure on the central pillar is Henry the Navigator. Inside, the spacious interior contrasts with the riot of decoration on the six nave columns and complex latticework ceiling. This is the resting place of both explorer Vasco da Gama and national poet Luís de Camões. Don't miss the Gothic- and Renaissance-style double cloister, also designed to stunning effect by Castilho.  Lines can be especially long here; buy a timed ticket in advance.