Castle Park is a public open space in Bristol, England, managed by Bristol City Council. It is bounded by the Floating Harbour and Castle Street to the south, Lower Castle Street to the east, and Broad Weir, Newgate and Wine Street to the north. Its western boundary is less obviously defined and has been the subject of controversy, perhaps because the area around High Street and St Mary le Port Church, though not part of the park and always intended for development, is often considered at the same time as the park.

The Frome, historically the Froom, is a river that rises in Dodington Park, South Gloucestershire and flows southwesterly through Bristol to join the river Avon. It is approximately 20 miles (32 km) long, and the mean flow at Frenchay is 60 cubic feet per second (1.7 m3/s). The name Frome is shared with several other rivers in South West England and means 'fair, fine, brisk'. The river is known locally in east Bristol as the Danny.