What is "tauzieher"

The Tauzieher ( German for "rope puller") is a limestone sculpture by Nikolaus Friedrich which was erected in 1911 in Rheinauhafen, Cologne, Germany. It depicts a man making a heavy rope or hawser fast to a bollard and is 6.5 metres (21 feet) in height. In 1980, it was listed as one of the first heritage sites in Cologne.