Want to properly offend a king? Sculpt a giant hill figure in chalk of him riding out of town.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

Underneath the bustling city streets, a hydroponic farm grows unique herbs in an urban oasis.

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

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A terrific purveyor of natural history objects and curios.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

This home of a taxidermy hoarder is among the grandest and most singular of historic English estates.

This charming railway is one of the oldest and steepest funiculars in England.

This mysterious underground cave in Shropshire dates back to the 18th or 19th century.

The last fully working Victorian Turkish bath in England.

Astonishing rock formations dot the Brimham Moor landscape.

A group of glacial erratic boulders are improbably balanced on white limestone pedestals.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

Small French town or alien garage?

An ancient woodland that inspired a young J.R.R. Tolkien.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

One family's environment-friendly hobbit-house in Wales.

A hidden gem in the middle of the city's infamous Jewelry Quarter.

This medieval manor house was equipped with secret compartments for hiding priests.

The gravestone of a delicate singer-songwriter bears a fittingly introspective epitaph.