Saalfeld, Germany
Saalfeld Fairy Grottoes
"The most colorful grottoes of the world.
Places I want to go
Places on this traveler's wishlist.
Saalfeld, Germany
"The most colorful grottoes of the world.
Wuppertal, Germany
This "floating railway" is one of the world's oldest monorail systems.
Tangier, Morocco
Along the most northwestern point in Africa is an ancient cave surrounded by legends.
Gibraltar
There was a top secret plan during World War II to seal a group of soldiers inside the rock.