Skaro – Doctor Who
You can’t have Daleks without Skaro, the home planet first seen the second episode of Doctor Who ever. It was originally the home of both the Thals and the Kaleds, whose constant use of nuclear, chemical, and biological weapons caused severe mutation. With all the wibbly-wobbly timey-wimey going on, it’s hard to keep all the specific details straight, but it is usually covered in cities and has a red atmosphere and acid rain. Sounds like an ideal vacation spot!