The wide range of legislation means that the terminology describing how historic sites are protected varies according to the type of heritage asset. Monuments are "scheduled", buildings are "listed", whilst battlefields, parks and gardens are "registered", and historic wrecks are "protected". Historic urban spaces receive protection through designation as "conservation areas", and historic landscapes are designated through national park and Area of Outstanding Natural Beauty (AONB) legislation. In addition, there are areas in the UK are also protected as World Heritage Sites.