Chapel of the Holy. Cross - one of the oldest Christian religious buildings in Germany, in terms of having the shape of a cross, that is, repeating the image of the Edicule (Holy Sepulcher). Subsequently, it is this form has become the most common for Christian churches. The temple is located outside the historical center of Trier, 2 km from the Market Square.

The chapel was founded in the early 4th century of St Queen Helena, mother of Constantine the Great, after her visit to Jerusalem. The original building has been preserved in its place at the beginning of the 11th century was built new in a traditional Roman style. The silhouette of the octagonal tower that rises above the center ravnokonechnogo cross, clearly visible influence of Byzantine architecture of the time.

Over the next centuries, Chapel St. Cross was reconstructed several times and changed its appearance. In the mid-17th century, the building plan was significantly changed: expanded west wing of the sacristy and completed in the eastern part of the chapel. A little later, the western portal of the chapel of St. Cross was decorated with sculptures depicting scenes of the crucifixion of Christ.

Extensive destruction in Trier during World War II was not spared and the chapel, it was badly damaged and was restored only in 1958. Unfortunately, many of the elements of interior decoration of the 17th century Baroque lost forever. In 1962, the southern wing of the chapel was attached a new parish church. Once or twice a month in the chapel of St. Cross services are Orthodox parish in the name of the Forty Martyrs of Sebaste in Trier.