A layered tribute to the work of mosaicist Isaiah Zagar.

Italian cave with exceptional acoustics and an unsavory history.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

The world's most elegant power lines.

One of the largest underground systems runs under Canada's largest urban center.

England's most notorious suicide spot.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

Regency-era excess on the English Coast.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

A massive Montreal stadium that has seen nothing but trouble since its inception.

A monument celebrating the idea of reaching inaccessible places.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

Home to three historic ships from the age of Vikings.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A open air theatre built on a cliff by an eccentric British woman.

The largest greenhouse in the world is home to over one million types of plants.

Huge winged monument in the United Kingdom.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

The sign at the garden gate reads: “These Plants Can Kill.”

A stone copper was sculpted on the wall of the Carlisle Cathedral to honor a local hero.

England's "pier at the end of the universe" unites astronomy and contemporary architecture.

The heart of a Scottish legend had a centuries-long journey before reaching its final resting place.