There are some places that seem like natural homes for ghosts, like cemeteries or hotels in the middle of nowhere, and the US has its fair share of those. But there are also plenty of surprising places with ghostly goings-on and strange happenings across the country, from natural phenomena that can be explained by science to 'haunted' spots and mysteries that remain stubbornly – and spookily – unsolved.

Click through the gallery to see some of the most mysterious places around the US...