There are many listed buildings in Penarth, a seaside town in the Vale of Glamorgan, Wales. Penarth was popular with holidaymakers from far afield, but also a popular place to live for the wealthy business owners of Penarth and nearby Cardiff. The town has a wealth of Victorian and Edwardian architecture. A listed building is one considered to be of special architectural, historical or cultural significance, and has restrictions on amendments or demolition. Buildings are listed as either Grade I, II* and II buildings lists, with the Grade I being the most important.