Water Tower, Cardiff Central Station

The Wales Empire Pool, known locally as the Empire Pool, was an international standard swimming pool building, located in Cardiff, Wales from 1958 until it was demolished in 1998. It was a centrepiece for the 1958 British Empire and Commonwealth Games.

Rail transport in Cardiff has developed to provide connections to many other major cities in the United Kingdom, and to provide an urban rail network for the city and its commuter towns in southeast Wales. Today, there are three train operating companies in Cardiff: Great Western Railway, CrossCountry and Transport for Wales.

BBC Cymru Wales New Broadcasting House (Welsh: Tŷ Darlledu Newydd BBC Cymru Wales), previously known as BBC Wales Headquarters building, is the headquarters of BBC Cymru Wales in Central Square, Cardiff. It operates many of its broadcasting services (radio and TV) from there using IP-based studios. It also serves as a base for S4C.The £120 million building replaced the BBC Cymru Wales Broadcasting House in Llandaff, when 1,000 production and support staff began moving into the new facility in October 2019. The building is officially located at 3 Central Square, but has also been referred to as BBC New Broadcasting House.

Temperance Town, Cardiff, was the unofficial name for a working-class inner-city suburb established in the late 1850s and demolished in the 1930s to make way for Cardiff Bus Station.

Stadium House (Welsh: Tŷ Stadiwm) in Park Street, Cardiff, Wales, is the third tallest building in Cardiff, Wales, which stands next to the Millennium Stadium. The 255 feet (78 m) tall building is owned by BT Group, and underwent a £7.1 million refurbishment programme in 2002. Work started on the building in March 1974 and was completed in 1976. The building is now clad in white and blue, while the roof is topped with a 131 feet (40 m) stainless steel spire, which was lit up green and white in the evening, to complement the cladding. The addition of this spire qualifies the building as the tallest in Cardiff and Wales, at 390 feet (120 m), if the spire is included. This building is also an internet exchange point. The building is clad in a composite material. Numerous incidents of the cladding falling off the building have resulted in adjacent roads being closed.

Dragon's Heart Hospital (Welsh: Ysbyty Calon y Ddraig) was a temporary hospital located at the Millennium Stadium in Cardiff. It opened on 13 April 2020 to help deal with the impact of the COVID-19 pandemic in Wales. It was decommissioned towards the end of October and early November 2020.It was the third of the COVID-19 hospitals set up in the United Kingdom, and the first in Wales. It had 300 beds, with space to expand to up to 2,000, which would make it the largest hospital in Wales, and the second largest in the United Kingdom.

The Millennium Stadium (Welsh: Stadiwm y Mileniwm), known since 2016 as the Principality Stadium (Welsh: Stadiwm Principality) for sponsorship reasons, is the national stadium of Wales. Located in Cardiff, it is the home of the Wales national rugby union team and has also held Wales national football team games. Initially built to host the 1999 Rugby World Cup, it has gone on to host many other large-scale events, such as the Tsunami Relief Cardiff concert, the Super Special Stage of Wales Rally Great Britain, the Speedway Grand Prix of Great Britain and various concerts. It also hosted FA Cup, League Cup and Football League play-off finals while Wembley Stadium was being redeveloped between 2001 and 2006, as well as football matches during the 2012 Summer Olympics. The stadium is owned by Millennium Stadium plc, a subsidiary company of the Welsh Rugby Union (WRU). The architects were Bligh Lobb Sports Architecture. The structural engineers were WS Atkins and the building contractor was Laing. The total construction cost of the stadium was £121 million, of which the Millennium Commission funded £46 million.The Millennium Stadium opened in June 1999 and its first major event was an international rugby union match on 26 June 1999, when Wales beat South Africa in a test match by 29–19 before a crowd of 29,000. With a total seating capacity of 73,931, it is the largest stadium in Wales and the fourth largest (and second largest outside London) in the United Kingdom by total capacity. In addition, it is the third-largest stadium in the Six Nations Championship behind the Stade de France and Twickenham. It is also the second-largest stadium in the world with a fully retractable roof and was the second stadium in Europe to have this feature. Listed as a category four stadium by UEFA, the stadium was chosen as the venue for the 2017 UEFA Champions League Final, which took place on 3 June 2017. In 2015, the Welsh Rugby Union announced a 10-year sponsorship deal with the Principality Building Society that saw the stadium renamed as the "Principality Stadium" from early 2016.

Tŷ William Morgan - William Morgan House is a UK Government building and hub in the centre of the city of Cardiff, Wales. It primarily serves as a base for HM Revenue and Customs (HMRC), but also the UK's Department for International Trade and Cabinet Office. It was completed in 2020.

The Welsh Sports Hall of Fame (WSHOF) is a charitable organisation created to commemorate the sporting achievements and preserve the artefacts of Welsh athletes. It was established in 1980 from the memorabilia collection of Welsh radio commentator G. V. Wynne-Jones. Since 1990, inductees to the exclusive "Roll of Honour" have been chosen annually by a trustees committee comprising representatives from athletics, media, universities and museums. The organisation has also given awards to individuals for outstanding contribution to Welsh sport. In 2018 an extra award was added to commemorate the former chairman, Rhodri Morgan. The first 'Rhodri' was awarded to the City of Cardiff for their outstanding service and commitment to sporting excellence.

Cardiff Central bus station was the main bus transport interchange in the Cardiff city centre until it closed on 1 August 2015. With 34 stands, it was the largest bus station in Wales. It was located adjacent to Cardiff Central railway station forming a major interchange. Construction of a new bus and transport interchange on the site of the former NCP multi-storey car park in Wood Street, adjacent to the old bus station, is underway with an expected date of completion in Spring 2023.The station used to handle the vast majority of bus and coach services that run in and through the city. Notable exceptions were Megabus services (which called at Kingsway and Cardiff University), Stagecoach South Wales route 122 (which called at Greyfriars Road) and EST route 89 (which used Customhouse Street).

A statue of Betty Campbell sculpted by Eve Shepherd was unveiled in Central Square, Cardiff, Wales, in 2021. Betty Campbell had been the first black head teacher in Wales.

Central Square (Welsh: Sgwâr Canolog) is a large public space in Cardiff, Wales, adjacent to Cardiff Central railway station and included Cardiff Central bus station between 1954 and 2015. It was redeveloped and extended in the late 2010s and early 2020s.