Built in the 1300s on the site of earlier cathedrals, this is the finest Gothic building in Bavaria. Its harmonious exterior is alive with medieval sculptures and inside is medieval stained glass.

Commissioned by Charlemagne in 786 AD, Aachen's cathedral is the oldest in Northern Europe and contains several holy relics.

Founded in 1010, the cathedral of Hildesheim contains many treasures of early medieval art, including bronze doors carved with biblical scenes and a bronze column showing the life of Christ.

The house where Luther and his family lived is well-preserved and full of Reformation relics, including Luther's desk, his pulpit, and first editions of his books.

Founded by Irish missionaries, this Romanesque church is famed for its fascinating sculptured portal.

Built in the 11th and 13th centuries, St. Gereon has an unusual decagonal-shaped nave topped with a great dome. It houses numerous medieval murals, rare Romanesque mosaics, and the tomb of St. Gereon.

This was once a Dominican priory, but since the Reformation it has been Erfurt's main Protestant church. Meister Eckhart was a friar here.

Built in 1905, this impressive basilica has been called the "Protestant St. Peter's." The crypt contains tombs of Prussian royals and you can climb up to the dome.