A thought-provoking outdoor art installation sits in the seat of German law.

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Where the embers of the Big Bang were first detected.

A historic grist mill and active sluice on the Black River.

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

Creaky dinosaurs grow in the backroads of Monmouth County, New Jersey.

In which a local geological marvel becomes a quaint roadside attraction.

The site of one of history's most indelible and horrific tragedies.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

How this Pine Barrens hill got its name is uncertain, but on a good day the view from the fire tower is crystal clear.

One of the world's largest model railroads is a mind-boggling achievement.

Destructive children, start your engines.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

Huge masonic hall in Philadelphia with lavishly themed rooms.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

A failed piece of Orientalism has become the proud symbol of a community.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.