Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Once the most densely populated place in the world, this island is now a ghost town.

The magical, mossy forest that inspired Princess Mononoke.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

This historic Chinese tower was said to have been haunted by fox spirits but is now haunted by a grisly murder.

A studio devoted to keeping hundreds of unique Chinese arts alive.

A Zoroastrian funerary tower where excarnation rituals are carried out is threatened by the area's dwindling vulture population.

A mecca for India's Jains.

Antiques shop filled with all manner of curious collectibles.

Surprisingly Delicious Asian-Style Hot Dogs.

Housing a morgue, rare and confiscated weapons, and autopsy remains, the Vancouver police museum displays the dark side of Canada.

An American city stranded at the tip of a Canadian peninsula where strict adherence to the "49th parallel rule" became problematic.

Mysterious wreckage of a small plane has been lodged in this tree since at least 1971.

Famously misunderstood wonder of the ancient world