 The Patriarchal Cathedral was destroyed after the Ottomans captured the Bulgarian capital after their Siege of Tarnovo on 17 July 1393 . The church was fully reconstructed in the 20th century ; reconstruction works were carried out by a team under architect Boyan Kuzupov . These commenced in 1978 and were finished in 1981 , to mark Bulgaria 's 1300th anniversary . However , it was not until November 1985 , when the contemporary murals were finished , that the church was opened once again for visitors . The church 's ruins have been protected as a national antiquity since 1927 ; in 1967 , they were proclaimed an architectural monument of culture of national importance . As part of the Tsarevets architectural reserve , it is also listed among the 100 Tourist Sites of Bulgaria . 
 The Patriarchal Cathedral was destroyed after the Ottomans captured the Bulgarian capital after their Siege of Tarnovo on 17 July 1393 . The church was fully reconstructed in the 20th century ; reconstruction works <a href='uninflect' title='1'><mark>were</mark></a> carried out by a team under architect Boyan Kuzupov . These commenced in 1978 and <a href='uninflect' title='2'><mark>were</mark></a> finished in 1981 , to mark Bulgaria <a href='null_genetive' title='3'><mark>'s</mark></a>1300th anniversary . However , it <a href='negative_concord' title='4'><mark>was</mark></a> <a href='negative_concord' title='5'><mark>not</mark></a>until November 1985 , when the contemporary murals <a href='uninflect' title='6'><mark>were</mark></a> finished , that the church was opened once again for visitors . The church <a href='null_genetive' title='7'><mark>'s</mark></a>ruins <a href='been_done' title='8'><mark>have</mark></a> been protected as a national antiquity since 1927 ; in 1967 , they <a href='uninflect' title='9'><mark>were</mark></a> proclaimed an architectural monument of culture of national importance . As part of the Tsarevets architectural reserve , it is also listed among the 100 Tourist Sites of Bulgaria . 
The Patriarchal Cathedral was destroyed after da Ottomans captured tdaBulgarian capital after their Siege of Tarnovo on 17 July 1393 . The church was fully reconstructed in the 20th century ; reconstruction works was carried outt by a team under architect Boyan Kuzupov . These commenced in 1978 and was finished in 1981 , to mark Bulgaria  1300th anniversary . However , it ain't until November 1985 , when the contemporary murals was finished , that the church was opened once again fir visitors . Thdahurch  ruins done been protected as a national antiquity since 1927 ; in 1967 , they was proclaimed an architectural monument of culture of national importance . As part of the Tsarevets architectural reserve , it is also listed among the 100 Tourist Sites of Bulgaria .