Chernobyl: a disaster zone revisited 30 years on
26 April 2016 Last updated at 08:40 BST
Imagine a city left deserted for thirty years. Well that's what happened after a nuclear disaster in Ukraine in Eastern Europe.
Scientists have spent a week inside the exclusion zone - where nobody lives - taking pictures. Now, using virtual reality technology, everyone can take look around the area around the Chernobyl nuclear power plant and meet its surprising animal residents.
Leah's been having a look. Watch this video for more.