Since early centuries, different nations and religions were coming to and going from Tbilisi area, and all of them left their traces in numerous churches and religions. The absolutely dominant religion  in Georgia is Eastern Orthodox. Georgia is among the first Christian countries in the world as it’s regions officially became Christian in the 4th century. Georgians take their religion very seriously. Try to cross yourself when seeing every single church, driving on the mountain road at the speed around 100 km/h as most of Georgian marshrutka drivers do... not easy, but to do that is almost a must. However centuries of Persian and Turkish invasions left a deep Muslim mark. Armenians are the second biggest religious minority (3.9%) in Georgia after Muslims (9.9%). Catholics – 0.8 %, Yezids - 0.4%, Jews -  0,1% are presented in the city too. Tbilisi is open to minorities’ historical churches, but try to ask a random Georgian what he thinks about building a new Mosque, for the Muslim population of the country, in the Muslim village… Tolerance and cosmopolitanism might evaporate somewhere if you rub the surface a little bit.