Step inside Lucy, the world's largest "elephant."

This might just be the TARDIS of bookstores.

Mysterious rocks that ring musically when struck.

World's first "penitentiary," meant to be humane, drove men insane.

"Gnome Chomsky" was once the largest gnome in the world, but is now simply tall for his kind.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

The little-known final resting place of one of America's greatest writers.

Tucked in the back of this amazing antique store is an important piece of medical history.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A walkable map of the world, made from soil and stone by one man.

Dozens of musicians have planted trees in this Danish park, and donated songs to go with them.

A failed attempt to control drifting sands yielded a gnarled sylvan wonderland.

Faith and landscaping come together in a small Danish haven dubbed the "Bible Garden."

Nearly 40 miles and 1,000 years of limestone mines under Denmark.

Iron Age "bog person" preserved for over 2,300 years.

The decaying remains of a 1960s mechanical wonderland that never officially closed.

An exhibition of preserved locomotives housed in a 1950s depot shows the history of Denmark's railway.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Hans Christian Andersen for the postmodern world.

This sublime architectural marvel is a rare example of an expressionist church.

Danish observation tower designed to look like a giant beer bottle.

The world's largest maze is a nature park with nearly 200 decision points.