Located in a Tuscan valley near Siena, this spectacularly beautiful abbey is a must-see. Gregorian chant can be heard from inside the elegant Romanesque church throughout the day.

This baptistery was built at the end of the 5th century, when the Arian Visigoths ruled Italy. The dome mosaic shows the baptism of Christ with a personification of the River Jordan.

The lovely Duomo di Spoleto dates from the 12th century. It features a fine Romanesque facade, magnificent frescoes by Fra Filippo Lippi and others, and a handwritten letter from St. Francis of Assisi.

Built in 548 over the site of the martyrdom of St. Vitalis, this octagonal church contains some of the most celebrated mosaics in the West.

The Paestum Archaeological Site in southern Italy is home to three Doric Greek temples - the Temple of Neptune, Temple of Hera and Temple of Ceres - and many other ancient ruins.

One of Europe's great icons, the Leaning Tower of Pisa is the campanile (bell tower) of Pisa Cathedral. In addition to its astonishing lean, the tower is notable for its magnificent Romanesque arcading.

Milan Cathedral is a elaborate and spiky Gothic edifice on the main square in the city center. It is the second largest Catholic cathedral in the world. And you can walk on the roof!

This 12th-century church on the outskirts of town is dedicated to Spoleto's patron saint. It has a fine Romanesque facade and extensive medieval frescoes in the crypt.