Uhlala

Uhlala was a planet in the Andromeda Galaxy that had a large art gallery. It appeared to be something of a metropolis; when the Doctor and Donna Noble visited the planet, it had very busy streets filled with traffic.

Life
The planet was shared by both robotic and organic life forms, including various robots, near-humans and a variety of unusual aliens.

Establishments
Uhlala had a notable art gallery that the Doctor took Donna to visit. Among other pieces of art, the gallery contained a slab of grey marble in a glass container and a piece of machinery disguised as art that became a part of the device used to open the black hole Sentilli. The latter was stolen by transmat (along with Donna) by the Cult of Shining Darkness. The gallery also had a mirrored floor. (NSA: Shining Darkness)