Naumburg Cathedral, officially known as St. Peter and St. Paul's Cathedral, is a UNESCO World Heritage Site located in the city of Naumburg, Germany. The cathedral is famous for its Romanesque and Gothic architecture, including its two impressive west towers, and is one of the most important examples of 13th-century Gothic architecture in Germany.

The cathedral was built between 1210 and 1230, and was consecrated in 1242. It was commissioned by Bishop Engelhard of Naumburg, who brought in Italian stonemasons to work on the cathedral. The building is notable for its unique mix of architectural styles, including elements of Romanesque and Gothic architecture, which reflect the changing architectural trends of the time.

The interior of the cathedral is equally impressive, featuring a beautiful nave with a ribbed vault ceiling, intricate carvings and statues, and a stunning high altar that dates back to the 15th century. The cathedral is also home to a number of notable works of art, including the famous Naumburg Master sculptures, which depict the Twelve Apostles.

In addition to its architectural and artistic significance, Naumburg Cathedral also has a rich historical and cultural heritage. It played an important role in the development of Gothic architecture in Germany and was a center of learning and culture during the Middle Ages. Today, the cathedral is a popular tourist attraction and is considered one of the most important cultural landmarks in Germany.