10 Most Iconic Alien Planets In Modern Doctor Who

10. The Dalek Asylum

Surrounded by a dense forcefield and a killer nanocloud, this snowcapped world was home to some of the most deranged Daleks in the universe.

Mountainous and expansive, the Dalek Asylum looked like an unassuming ski resort from the outside. The interior, however, hosted a network of dingy, abandoned tunnels and crumbling facilities to house insane Daleks. Inside this labrnyth, you could find intensive care units and prison cells bursting with the worst of the worst of the Dalek race.

The Daleks incarcerated in the Asylum were either malfunctioning with age or survivors of conflicts with the Doctor. Variants from throughout Doctor Who history were present on this terrifying world, including Special Weapons Daleks and Emperor's Guards.

Fully automated and with the security nanocloud rewriting intruders' DNA to become zombified Dalek Puppets, this was one of the last planets in the universe you would want to end up.

Even the Daleks were scared of it - sending the Eleventh Doctor through the forcefield and on a mission to help them destroy it in 2012's Asylum of the Daleks. Whilst on the planet, the Doctor and his companions also encountered a crashed escape pod from the starship Alaska, buried under the snow.

With the help of Oswin, a former crewmate-turned-Dalek, the planet's forcefield was lowered and the Doctor and his friends managed to escape before the Daleks decimated the Asylum with a missile strike.

Intergalactic Travel Advice: Try the soufflé.