The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

Fascinating town where normal life interfaces with the occult.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

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

A little slice of Japan and its aesthetics in London's Holland Park.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The fragmented remains of a massive public bath connected to the city's water supply.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

A lush indoor jungle fills this bustling Madrid transportation hub.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

This little sun pays homage to a massive gate that once stood at this location.

An automaton perched above an classic clock and watch store

These distorting, funhouse mirrors achieved fame in a renowned piece of Spanish theater.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

These turtle-shaped concrete stepping stones provide a unique river crossing in central Kyoto.

This ordinary-looking rock may have played an important role in a 16th-century Scottish battle.

This is Britain's one and only clock concealed in the pavement.

Hidden within Sydney’s lush Royal Botanic Garden is a walled cactus rockery and the site of Australia's first zoo.

A statue of a Scottish cultural icon in central Sydney.

The arching stretch of London's longest street holds many reminders of the area's maritime past.