The Cașin Church (Biserica Cașin), sometimes also called Cașin Monastery (Mănăstirea Cașin), is a Romanian Orthodox church in the north of Bucharest, close to the Triumphal Arch. The church is named after the Cașin Valley in Bacău County and is dedicated to the Archangels Michael and Gabriel.
In 1935 the plans to build a church on land donated by the Bucharest City Hall were created. The church was designed by the architect Dimitrie Ionescu-Berechet who won the competition, and the construction started in 1937. The work stalled during the Second World War and was resumed in 1946, but the church was only completed in 1959.
The Cașin Church is built on a Greek cross plan and resembles a Brâncovenesc style, with Byzantine influences. Its appearance is very similar to the New Saint Eleftherius Church which was built around the same time. The building measures a length of 42 meters, a width of 29 meters, a height of 50 meters, and covers an area of almost 800 square meters. It has a large spacial interior with a central dome surrounded by four smaller domes. The iconostasis is made of marble and alabaster with mosaic icons. Between 1962 and 1971, white and rose marble plates were installed on the floor and walls, and a balcony for the choir was constructed. In 2002-2003 the church was restored and in 2008 the copper green domes were painted in bright green.
