This imposing castle, a symbol of German identity and a World Heritage Site, is where Luther lived in hiding as Knight George. Here he threw an inkpot at the devil and translated the Bible into German
The Vatican Museums are among the best in the world, with treasures including classical sculptures, early Christian artifacts, Egyptian mummies and Renaissance masterpieces.
Trinità dei Monti
This twin-towered Renaissance church in Rome is best known for its iconic position atop the Spanish Steps.
St. Peter's Basilica
Vatican City, Vatican City
St. Peter's Basilica in Vatican City is the world headquarters of Roman Catholicism and one of the largest churches in the world. Founded by Constantine the Great in 324, it stands over the tomb of Saint Peter the Apostle.
St. Peter's Church in Caen is a splendid example of the transition between Gothic and Renaissance forms. Built in the 13th and 14th centuries, it was given a Renaissance east end in the early 16th century.
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.
This world-famous chapel painted by Michelangelo is still used for papal elections.
In the right transept is the Sistine Chapel, containing the elaborate tomb of Pope Sixtus V (1521-90) for which it is named. The chapel is decorated with frescoes and reliefs of events from his reign. In the center is an enormous reliquary containing part of the Holy Crib, carried to Rome by Christian refugees during the Muslim conquest of the Holy Land in the 7th century.
Next to the Borghese Chapel in the left aisle is the austere Sforza Chapel, which is reserved for prayer. This is believed by most scholars to have been designed by Michelangelo in 1562, when he was 85 years old. It was built a year later, supervised by his student Tiberio Calcagni. Borromini later visited to study the complex vaulting, which foreshadows Baroque architecture.
São Vicente de Fora
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.
Santa Maria Formosa
Santa Maria delle Grazie
The former Dominican monastery church of Santa Maria delle Grazie in Milan is home to Leonardo da Vinci's *Last Supper*, one of the most famous paintings in the world.