If you want to investigate, these places are all privately owned and you will need permission to look for ghosts, or take a tour offered by the establishment.
The Wabasha Street Caves, St. Paul
The Wabasha Street Caves in westside St. Paul have been used for 150 years, through St. Paul's bootlegging and gangster days, and are reputedly haunted by several spirits. Walking tours of the caves are held on Saturdays, for a $5 admission charge.The nearby mines, caves and brickyards in Lilydale Park are also reputed to be haunted by the ghosts of murdered gangsters and bootleggers, but all the caves are dangerous (several teenagers have died of carbon monoxide poisoning in the caves) and are closed to the public.
Mounds Theater, St. Paul
This renovated theater has had a long history of ghostly sightings and encounters from several distinct ghosts. They play it up with plenty of spooky shows and movies on the calendar, and offer two hour haunted tours for $20.Forepaugh's Restaurant, St. Paul
The story goes that Joseph Forepaugh, a wealthy merchant, committed suicide in Irvine Park, just outside his mansion. And that, shortly after, a maid in the house hanged herself on one of the upper floors. Her spirit is supposed to haunt the Forepaugh house, now a restaurant in downtown St. Paul.First Avenue, Minneapolis
The venerable nightclub and live music venue was once the Greyhound bus station, and it's alleged that ghosts of travelers and homeless people who died at the bus station now haunt First Avenue. The most common ghost story is of a woman in 1970s clothing who is supposed to have died of a drug overdose at the bus station, often spotted in the womens' bathroom. There are also stories of strange noises in DJs headsets and sound equipment being thrown off stage.No tours, but they'll gladly let you in to see the public areas of the building if you have a ticket to one of the shows. Whether you'll hear any strange noises will partly depend on who is playing that night.

