Most towns and cities have one or more amenity lakes, like Pembroke Mill Pond (shown here). These often have domestic wildfowl collections and facilities for families, such as rowing boat and paddle boat hire. Disused docks have also been converted into urban leisure facilities. In the UK generally, gravel pits are often adapted for leisure activities such as water skiing, wind surfing and boating, though this is less common in Wales, where they tend to be relatively small and abandoned in the aftermath of gravel extraction.