This photo series from the Atlantic highlights sometimes beautfiul, often eerie pictures of places that have been abandoned. Lots of research topics here: find out more about how one of these places got this way. Or more general topics: about how Olympic cities use the venues after the games are over, about how countries recover from disasters, about war, about the resilience of plants and animals.
There are 35 photos in the series. Here are a few, with their captions.