The Southbank Centre in the 26th Century

The Hayward Gallery on the South bank of the Thames opened in 1968. It and its partly Archigram-designed concrete walkways were still considered exotically futuristic enough five years later that it appeared as a 26th Century location in the Jon Pertwee Doctor Who story Frontier in Space, shown in the spring of 73.

Frontier in Space was an ambitious 'space opera', featuring Roger Delgado's final appearance as the Master, the Daleks, and various other alien races at war in deep space. To keep all of this wild ambition about representing a space war within tight BBC budgets most of the story takes place in various prison cells, spaceship cargo holds and the like.

Here's a clip of the Doctor and Jo Grant, his assistant, being escorted to a prison cell through the outlandish walkways of the Southbank Centre, accompanied by some marvellous synthesised incidental music from Dudley Simpson.

This is still how I think the future should look.