The Singel is a canal in Amsterdam which encircled the city in the Middle Ages. It served as a moat around the city until 1585, when Amsterdam expanded beyond the Singel. The canal runs from the IJ bay, near Central Station, to the Muntplein square, where it meets the Amstel river. It is now the inner-most canal in Amsterdam's semicircular ring of canals.
Other Dutch towns also have ring-shaped canals named Singel.
Amsterdam's famous flower market, Bloemenmarkt, is also located along the Singel between Koningsplein and Muntplein. The market stalls are actually boats floating in the canal!
Part of the Singel has been designated a red-light district, with prostitutes offering their services from behind red-lit windows. The area, known as the Singelgebied, is located near Lijnbaanssteeg and Oude Nieuwstraat. Yab Yum, one of Amsterdam's most exclusive brothels until closed by the local authority in January 2008, is located at Singel 295.
The Haringpakkerstoren tower was part of Amsterdam's Medieval city defenses. The tower stood at the beginning of the Singel, near the IJ. It was demolished in 1829. The municipal government is currently considering a plan to rebuild the tower and adjacent houses. However, this plan remains highly controversial; opponents consider it in poor taste and a waste of money.
The Torensluis, built in 1648, is an arched and exceptionally wide bridge across the Singel. Now covered by cosy café terraces and a bust of Dutch writer Multatuli, the Torensluis is the oldest remaining bridge in Amsterdam, and also the widest bridge in Amsterdam (42 meters). The Jan Roodepoortstoren tower stood on one end of the bridge but was torn down in 1829. However, the tower's foundations remain part of the bridge. The entrance and barred windows of the tower's dungeon are still visible. The bridge, also known as Brug 9, crosses the Singel near Dam square, at Oude Leliestraat.