Local legend says a monk brought Christianity to Bornholm through his sermons in a cave inside this free-standing rock.

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

From buck blood to Theriak miracle tonic, this collection of Renaissance chemist's gear look's like a wizard's pantry.

A Danish fisherman spent 25 years covering nearly every inch of his home with tens of thousands of shells as a gift to his wife.

Four alabaster giants contemplate the tides on the shore of Denmark.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

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

Graffiti-covered ruins that were once part of a farm owned by a mental hospital.

The quiet canyon has a tumultuous history involving a doomsday cult.

A performance hall at the American Jewish University moonlights as a sci-fi film location set.

Deep in the forest of northern Denmark, this secret underground bunker was built at the height of the Cold War.

The oldest tofu shop in the United States is a firm favorite with locals.

The seamy, underground secrets of Portland's criminal past.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

America's most famous piece of self-built architecture.

One of the last free public hot springs is decorated with hippie art.

The Los Angeles flood disaster that took 400 lives and ended the career of William Mulholland.

A 19th-century mansion houses the largest collection of gin in the European Union.

The formidable fowl can be found standing near an isolated hiking path.

This rock formation named for its unique shape is one of many that call the Alabama Hills home.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

An eccentric millionaire's personal curio collection includes at least one shrunken head.

This wilderness hike to a waterfall has an unlikely beginning in suburban Reno.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.