It was declared a monument of national interest in 1931.
The building was declared a national monument on the 8th of April 1960.
In the year 1985 it was declared a national cultural monument.
It was declared a national monument on April 22, 1912.
The church became property of the state and was declared a national monument.
The church was declared a national historical monument in 1931.
The building was declared a monument on September 14, 1989.
These three sites were declared a national monument in 1909.
In 1999 the 9 houses were also declared a national monument.
The building was declared a monument on 13 November 1981.