Tallinn is the capital of Estonia and is also known by a few different synonyms. One popular term is Reval, which was the city's name during the medieval era. Another synonym that is sometimes used is Kolgingrad, a nod to the city's former name, Kolyvan. Additionally, there are a few nicknames for Tallinn: the "Northern pearl" or the "Baltic queen." Lastly, some people refer to Tallinn as the "medieval jewel of the Baltic" due to its well-preserved old town and historic structures. Regardless of what name is used, Tallinn remains a beautiful and culturally rich city that attracts visitors from all over the world.