Poland's capital is Warsaw, a city of 6 letters. Warsaw is the largest city in Poland and the country's political, cultural, and economic center. It is located on the Vistula River in east-central Poland and has a population of 1.7 million people. The city has a long and rich history, having been founded in the 13th century and serving as the capital of the Polish-Lithuanian Commonwealth from 1596 to 1795. Today, Warsaw is a vibrant and modern city, with many attractions for visitors.