During the Soviet era, part of Kalyazin was flooded with the creation of the Uglichskoe Reservoir which also saw the destruction of the city's famous Troitsky Makariev Monastery. However the flooding inadvertently created what is now the city's most famous sight. Arising from the reservoir is the bell tower of the destroyed St Nicholas' Cathedral, which is now often just referred to as the Flooded Bell Tower. The city and its bell tower are a popular sight on a cruise along the Volga. A visit to Kalyazin can also be combined with a trip to Uglich or Kashin.