Naumburg cathedral is UNESCO world heritage site. The cathedral is composed of a Romanesque core structure flanked by two Gothic choirs in the east and in the west. Naumburg Cathedral was one of the large double-choir cathedrals built in the transitional style between Late Romanesque and Early Gothic. The four towers form part of the Romanesque structure of the cathedral, even though parts of the upper floors and domes date from more recent style periods. The cathedral is a vaulted, cruciform basilica in a bound system with a segregated crossing.