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.
Schottenkirche St Jakob
Founded by Irish missionaries, this Romanesque church is famed for its fascinating sculptured portal.
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.
Built in the 15th century, this wonderfully unique Gothic church is among the largest in southern Germany and a beloved landmark of Munich.
Built in 310, this huge brick structure was the throne hall of Constantine and other Roman emperors. Today it is used as a Protestant church.
Begun in 1209, this was the first Gothic cathedral in Germany and it is the tallest cathedral in the East Germany. Inside it shelters the grave of Otto I the Great.