The Museum and Archive of the Tellurian Stain was a museum on an unnamed planet with a purple-tinted sky. It was one of the Seven Hundred Wonders of the Universe.

It was designed as a collection of buildings connected by almost transparent walkways and moving pavements. The museum floated over a deep green ocean inhabited by giant turtles.

The museum documented humanity's expansion through the universe, viewing it as ultimately negative. The Seventh Doctor took Ace to the museum to show her the future accomplishments of the human race. (PROSE: The Colony of Lies)

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