Mechanus
From Tardis Wiki, the free Doctor Who reference
Mechanus was originally intended to be a Human colony. Earth sent Mechanoids to prepare the planet for colonization, but got caught up in an interplanetary war and the colonists never arrived. Steven Taylor crashlanded on the planet and was taken prisoner by the Mechanoids. The Mechanoids and their city were destroyed by the Daleks, and Steven departed in the Doctor's TARDIS. (DW: The Chase)
