Riga was built by German crusaders and early buildings and churches were put up in a Romanesque and Gothic styles which German craftsmen and Cistercian monks brought from Northern Germany. By the end of the 15th century Riga had aquired a metropolitan style which was characteristic to all of the cities in the Medieval Hansiatic league. The city’s skyline of three Church steeples as it was known became a true visiting card to what was then the capital of Livonia.Alberta and Strelnieku Streets comprise the biggest gallery of Art Nouveau architecture in Riga. Many buildings have still not been renovated and you can still venture into the beautiful although neglected hallways. Of particular interest are freshly renovated buildings of the Stockholm School of Economics and Law, as well as the head office of the Latvian anti-corruption police KNAB.