Some of the coolest spots you’ve never heard of may lie right beneath your feet. From one-of-a-kind caves to commuter walkways to “underground cities” from the early 1900s, there are many places to ...

KINGSTON, Pa. -- New York City Vacation Packages (NYCVP) in Kingston, Pa., said it will be the first tour operator to offer guided tours of "ground zero," the former site of the World Trade Center.

Travel a half-mile below ground and experience life as a coal miner -- for a few hours at least -- at the Tour-Ed Mine and Museum (748 Bull Creek Road, Tarentum, Pa.). You'll make your way 160 feet ...

What: Queen City Underground: Bosses, Breweries, and Burials Walking Tour Where: Cincy Haus, 1218 Vine St., Cincinnati Cost: $20 for adults, $10 for children; those 10 and younger are free More info: ...

Brand new tour dates have been added for the intrepid underground explorer to our Brooklyn Underground Subway Tour, the sister to our popular NYC Underground Subway tour across the East River! Led by ...

The Underground Donut Tour, a walking tour started by a donut enthusiast in Chicago in 2015, has launched a tour in D.C., and it comes with a few history lessons. The two-hour walking tours start ...