The Shrine of Our Lady of Fatima is one of most famous Marian shrines in the world. Some 4 million people visit each year, drawn by visions of the Virgin Mary reported by shepherd children in 1917.

King Joao I founded this Dominican monastery after winning a major battle. The splendid edifice was constructed over two centuries in the Gothic and Manueline styles.

A World Heritage Site, this fortified monastery offers some fascinating Templar history and the astounding stone carvings characteristic of Manueline architecture.

Now the Royal Pantheon for the Portuguese monarchy, this church was originally part of a 12th-century convent. The current building dates from 1582-1627.

This 15th-century church overlooking a Roman temple has a number of interesting features, including 18th-century tiles and an Arabian cistern. The convent is has been transformed into a hotel.

Part of a Franciscan church, the remarkable Chapel of Bones was lined with human bones and skulls in the 16th century as a reminder of immortality.

Boasting a spectacular hillside location among olive and cork trees, this stone circle is the most important megalithic site in Portugal. Its 96 standing stones were arranged in an oval in 5000-4000 BC.

Lisbon's cathedral was built in the 12th century on the site of a former mosque. Resembling a fortress on the outside, it has some interesting treasures on the inside.