Rome, Italy
Passetto di Borgo
The Pope’s secret escape route.
Places I want to go
Places on this traveler's wishlist.
Rome, Italy
The Pope’s secret escape route.
Rome, Italy
One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.
Rome, Italy
The underground sanctuary of a mysterious ancient cult.
Rome, Italy
The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.
Washington, D.C.
Washington's top-secret Cold War-era doomsday communications tower is located in a small neighborhood park.
Washington, D.C.
There's an old indoor swimming pool hidden directly underneath the White House Press Briefing Room.
Washington, D.C.
This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.
Washington, D.C.
The hidden offices underneath Memorial Bridge have been locked up since 1976.
Washington, D.C.
This lovely pocket park is one of the most under appreciated in D.C.
Washington, D.C.
Obscure Freemasons still live in D.C.’s largest private residence.
Washington, D.C.
Perhaps the most scandalous statue of America's first president.
Washington, D.C.
Decades before the scandal, this staircase on the river was a literal "water gate."
Washington, D.C.
An Industrial Revolution-era public work that purified water using nothing but sand.
Washington, D.C.
The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.
Washington, D.C.
You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.
Washington, D.C.
Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.
Washington, D.C.
It was once the base for a series of domestic terror attacks.
Washington, D.C.
A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.
Washington, D.C.
The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.
Washington, D.C.
A wondrous old library overlooking the nation's capital.
Washington, D.C.
Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.
Washington, D.C.
Home to items never before seen by the public.
Washington, D.C.
The site of the climactic scene from the classic horror film is now a historic landmark.
Stockholm, Sweden
A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.