At one time, Lübeck could only be entered by any of four town gates, two of which remain today – the Holstentor and the Burgtor. The Holstentor (Holsten Gate) is one of the relics of Lübeck’s medieval city fortifications. The gate now known as the Holsten Gate is the former Middle Holsten Gate; there was also an (older) Inner Holsten Gate, an Outer Holsten Gate, and even a fourth gate, known as the Second Outer Holsten Gate. The gate has had several improvements and fortifications over the years – including some efforts to decrease its sinking and, in 2002, modernization to include removal of the torture chamber. Known for its two-round towers and arched entrance, it is regarded today as a symbol of the city.