Holstentor

The Holsten Gate ("Holstein Tor", later "Holstentor") is a city gate marking off the western boundary of the old center of the Hanseatic city of Lübeck. Built in 1464, the Brick Gothic construction is one of the relics of Lübeck's medieval city fortifications and one of two remaining city gates, the other being the Citadel Gate ("Burgtor"). Known for its two-round towers and arched entrance, it is regarded today as a symbol of the city. Together with the old city centre (Altstadt) of Lübeck it has been a UNESCO World Heritage Site since 1987.

• http://en.wikipedia.org/wiki/Holstentor