30 years ago, the worst nuclear accident in history occurred. Reactor number four at the Chernobyl Nuclear Power plant in Russia (then the Soviet Union) exploded, killing workers and many in the surrounding area. Though the area is still contaminated by radiation, this hasn’t prevented vines, trees, shrubs and animals from taking over the facilities through its 30-year shut down. National Geographic recently took a trip to visit the historical site on its anniversary, capturing the grim and overgrown landscape. Head to Nat Geo to explore the area in full 360-degree photos.