A Spanish forest is filled with mysterious stone carvings.

A darkly erotic open-air statuary in Catalonia.

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

Wooden pathways run through this rocky landscape, which legend says was created when a dwarven king pulled down his own castle to stop raiding giants.

Stunning Roman aqueduct used for 1900 years and still standing.

A German artist built a home and garden filled with whimsical art pieces, like a massive, operational volcano.

These hilariously laughing bronze figures lampoon empty promises while encouraging civic engagement.

This strategic isle was once swapped between empires and almost entirely destroyed in a bomb explosion.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Created by a local artist, these quirky sculptures each have their own names and personalities.

An unexpected Easter egg lurks in the background of a cherub wall relief at the Breakers mansion.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

Ironically this massive termite is the mascot for a company that is acclaimed for killing his kind.

This ancient oak tree plays matchmaker for singles willing to branch out from the usual dating scene.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

A natural wonder in south Denmark.

Retirement home for giant obsolete machines.

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

An abstract and eyecatching clock/fountain is the centerpiece of this little-known German city.

Ruins of a German castle on top of a towering stone pillar.

An ornate century-old elevator still connects the two halves of Bad Schandau.

The largest manmade caves in Europe now function as a motorbike club's headquarters.

Tall columns of volcanic basalt make up this improbable-seeming rock formation.

Human figures and faces are carved into the sandstone surrounding this cave in Czechia.