The 'Water Tower' sculpture was designed by Nicholas Hare Architects and artist William Pye.
The plaza occupies land that was once part of the largest coal-exporting port in the world.
It famously represents the secret entrance to the Torchwood Three headquarters in the Doctor Who universe.
The ground surface is paved with a distinct blue-grey granite meant to evoke a maritime aesthetic.
The plaza's circular shape was designed to provide a natural acoustic bowl for live performances.
Roald Dahl Plass is a sunken, circular public plaza situated in the heart of Cardiff Bay. The centerpiece of the square is the 'Water Tower,' a 21-meter high fountain featuring a conical steel structure with flowing water. It serves as the primary outdoor gathering space for the surrounding waterfront development in Cardiff. The area is named in honor of the Cardiff-born children's author Roald Dahl. The plaza is built on the site of the former Bute West Dock. Its unique topography features a tiered amphitheater design that often hosts major public events and outdoor festivals. The location gained significant pop culture recognition as a filming site for the science fiction series Doctor Who and Torchwood. It functions as a central nexus between the Senedd, the Wales Millennium Centre, and the waterfront.
From the upper-level walkway looking down into the circular center of the plaza with the Wales Millennium Centre in the background.
Visit during the evening to see the Water Tower illuminated, which creates a distinct visual effect against the dark steel.
Walk the perimeter of the upper level for a panoramic view of the Cardiff Bay waterfront before descending into the plaza.
Do not attempt to climb or enter the Water Tower fountain, as it is designed for visual display rather than interaction.
