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.

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.

This prehistoric dolmen dates from c.4000-3500 BC. It is the largest dolmen in Europe.