Gdansk: The Green Gate spans the Long Market and connects the street to the promenade and wharves along the river. It was built 1568-71 as the formal residence of Poland's monarchs. It is a masterpiece by Reiner van Amsterdam, an Amsterdam architect, and reflects Flemish architectural influence in Gdańsk. Today the Green Gate houses the National Museum in Gdańsk. Exhibitions, meetings, conferences and shows are held here. The Gdańsk office of former Polish President Lech Wałęsa is located in one of the rooms.