Ortiz advised the Portuguese kings on matters related to astronomy and navigation during the Age of Discovery.

However, with the age of discoveries and a growing empire, Portuguese kings also grew politically stronger and managed to impose centralizes legal authority by creating several compilations of law.

It is famous for its mineral waters and the Vidago Palace Hotel, once a favorite of the last Portuguese kings.

Its Roman ruins - temple, baths, walls - sit among glorious churches, convents and the former palaces of Portuguese kings.

Peter of Portugal (Portuguese: Pedro) is the name of several Portuguese kings and infantes:

Since the 14th century, Portuguese kings have made the Paço da Vila, the royal palace in the center of town, their summer home.

The series's Princess Margaret thus marries a fictional very elderly Portuguese king, who lives only a few days until she smothers him in his sleep.

January 7 - Portuguese king Afonso IV sends three men to kill Ines de Castro, beloved of his son prince Pedro - Pedro revolts and incites a civil war.

The palace, built by King Joao I near the end of the 14th century, was for 600 years the summer residence and hunting lodge of Portuguese kings.

Thereafter, Portuguese kings ruled as absolute monarchs.