The Holy Trinity Cathedral of Tbilisi, completed in 2004, and paid for by Georgian billionaire, Putin ally, and former president Bidzina Ivanishvili. (Georgia’s Donald Trump?)
Tbilisi is a beautiful juxtaposition of old (the city pre-dates written history, and has many structures that are thousands of years old) and new. There are a number of modern steel and glass structures sprinkled throughout the city.