Most of the Reformed Church of Debrecen is the main attraction of the city and striking architectural monument in a series of buildings in the classical style in Hungary. The church was designed by architect Michael ovens and built in the years 1805-1822. The length of the transept (with two bodies against each other and from the pulpit in the northern part) is 38 m long and 14 m wide, from east to west - 55 meters long and 15 meters wide. The height of the towers 61 meters. Number of seats in the church around 1800. In the western part of the church is the famous 5-ton "Rakoczy - the bell." Which was presented to the church in 1637 Gyorgy Rakoczy.

  Rakoczy was supported by the population (especially the peasantry, to raise the struggle for national liberation) in the north of the Kingdom of Hungary. Followed in 1645 Linz peace with the Holy Roman Emperor and Hungarian King Ferdinand III Habsburg, Hungary guaranteed religious freedom and the return of all Protestant churches taken away from them. Rakoczy himself was in possession of the private life of seven Hungarian counties and other large tracts of land. He also obtained for himself and his descendants the title of imperial prince.

  A large church has become a symbol not only for the residents of the city of Debrecen, but for the whole of the Reformed Church of Hungary. Originally, this place was an old church, built back in the 12th century. Later, in the 15th century, it was replaced by St. Andrew's Church, built on the donations of family Dosa Debrecen. After the expansion of the temple was the largest Gothic church of the 16th century, but it burned down in 1564.

  In 1626 the church, which had already called St. Andrew's, began to recover, and later built a separate Red Tower of bare brick Big Bell Rakoczy, reconstructed the basement walls (they can be seen in the west end of the Great Church). However, St. Andrew's Church was burned along with the college during a fire in 1802.

Finally, in 1821 this place was built Calvinist cathedral in neo-classical style. Now it is the largest Protestant churches of the country.