Carriers Find a ticketPlan Your Airport Journey in Advance.Plan JourneyWarsaw – a hub of industry, education, and art, but also a city rich in historical buildings and architectural gems. Many landmarks can be found in the Old Town, which is listed as a UNESCO World Heritage Site. The gateway to the Old Town is the Royal Castle. Be sure not to miss one of the most beautiful palaces in Warsaw, the Krasiński Palace, with its stunning frescoes, sculptures, and expansive garden perfect for relaxing. Also worth visiting are Wilanów Palace, the remains of the Barbican defensive walls, the Old Town Market Square with the statue of the Mermaid of Warsaw, Castle Square, and the Gothic St. John’s Archcathedral. Other popular Warsaw attractions include the Palace of Culture and Science and the Copernicus Science Centre. If you want to get a comprehensive understanding of the city, visit the National Museum in Warsaw.