Synchronis

From Tardis Wiki, the free Doctor Who reference

Synchronis was a planet that the Fourth Doctor and Leela visited after the secondary console room. It was a protected world and the TARDIS only managed to get there after a fire in its console room . There was no war or poverty, only peace and great architecture. It contained one of the seven hundred Wonders of the Universe, the waters of empathy. (AUDIO: Empathy Games)