Excerpt from this Top 10 List, many of which are tied to historical sites: 1. Hair-Raising Harpers: Ghost Tours of Harpers Ferry, Harpers Ferry, West Virginia
Self-proclaimed as "America's oldest ghost tour," this terrific tour has been running for more than 40 years. Brave travelers are invited to journey through Harpers Ferry's historic "Lower Town," to visit Hog Alley and other dwellings where past tragedies have left sauntering spirits. A TripAdvisor traveler said, "It was good, creepy fun!"

2. I Ski Dead People: Park City Ghost Tours, Park City, Utah
Discover which apparitions inhabit local hot – or rather, chilling – spots in this famous ski destination, known also for its former days as a mining town (and its ghosts of miners gone by). Tour-goers often catch a glimpse of "Lizzy," the apparition who frequents the Imperial Hotel, while ghoulish miners from yesteryear have been spotted sipping a cold beverage at the No Name Pub, formerly the Alamo.