The Cathedral of Kars, also known as the Holy Apostles Church is a former Armenian Apostolic church in Kars, eastern Turkey. Built in the mid-10th century by the Armenian Bagratid King Abas I, it was converted into a mosque in 1579. In the 19th and early 20th century it was converted into a Russian Orthodox and later Armenian cathedral. In 1993 it was again converted into a mosque and is called Kümbet Mosque. It currently comprises part of a larger Islamic complex that includes the Evliya Mosque, the biggest mosque in Kars.

Armenian architecture comprises architectural works with an aesthetic or historical connection to the Armenian people. It is difficult to situate this architectural style within precise geographical or chronological limits, but many of its monuments were created in the regions of historical Armenia, the Armenian Highlands. The greatest achievement of Armenian architecture is generally agreed to be its medieval churches and seventh century churches, though there are different opinions precisely in which respects.