There are many places on the planet that are radioactive. When on Earth, has a list of 10 sites where humans continue to live to this day. It’s interesting because some of them are naturally radioactive. High levels of trace radioactive elements are contained in the hillsides, beaches, and surrounding areas. Due to erosion, and the general tendency of man to use their surroundings to live in, background levels of radioactivity are much higher then normal.
Of course, Chernobyl is top of the list, but there are still some other interesting things there. Many are from the cold war era, and in areas of the former Soviet Union.