Tbilisi is the capital city of Georgia, located on the Mtkvari River. Founded in the 5th century AD, Tbilisi has historically been a multi-cultural city and the capital of various Georgian kingdoms. Notable landmarks include the Sameba and Sioni cathedrals, Freedom Square, and the Georgian National Museum. The climate is mild, with summer temperatures between 20-32°C and winter between -1-7°C.