The Dormition of the Theotokos Cathedral is the largest and most famous Bulgarian Orthodox cathedral in the Bulgarian Black Sea port city of Varna, officially opened on 30 August 1886. It is the residence of the bishopric of Varna and Preslav and one of the symbols of Varna. According to the project, the cathedral is a three-naved cross-domed basilica featuring two aisles and sized of 35 by 35 m, with the main altar being dedicated to the Dormition of the Theotokos, the north one to Saint Alexander Nevsky and the south one to Saint Nicholas the Miracle Worker. The view from the tower is amazing, but will have to overcome the 133 steps of the narrow spiral staircase.