Listed buildings in Cardiff Bay Listed buildings in Cardiff Bay There are many listed buildings in Cardiff Bay, part of Cardiff, capital city of Wales. 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. Cardiff Bay describes the redeveloped docklands area of the city, including the neighbourhoods of Butetown and Atlantic Wharf, previously better known as Tiger Bay. It is bounded approximately by the River Taff to the west, the Bute East
Cardiff Bay railway station building and its setting". In June 2018, new operator Transport for Wales Rail Services announced plans to build an extension and new terminus for the Butetown Branch, along with an intermediate station at Loudoun Square. These will replace the existing station, which will close. There is a shuttle service between Cardiff Queen Street and Cardiff Bay every 12 minutes Monday to Saturdays (between 0630 and 2330) and every 12 minutes on Sundays (between 1100 and 1630) using a Class 153 "Super Sprinter". The service was formerly operated by a Class 121 "bubble car", but this was withdrawn in June 2013.