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.

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.

Located in the city center, this 1st-century Roman temple with delicate Corinthian columns remains remarkably intact.

This hilltop sanctuary is an important Catholic pilgrimage site that also offers interesting architecture and fantastic views.