Situated in the city centre, it runs between Water Street and Derby Square, where Liverpool Castle once stood.

[3] Its course was marked out at the creation of the Borough by a representative of King John.

The boundary of the market was marked out by three Sactuary Stones, one of which still remains on Castle Street.

[4] The original street was very narrow, with barely enough room for two carts to pass each other.

Whilst once home to several banks, Castle Street is now home to many restaurants and bars and considered part of Liverpool's Food Quarter.