This neighborhood thoroughfare is haunted by dozens of homemade monsters.

If Hello Kitty were Mickey Mouse, this would be Disneyland.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

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

One part local history, 99 parts gruesome haunted house.

A local tree surgeon has created a whimsical walk full of carved tree stumps near Scotland's Loch Lomond.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

An 1814 castle that hosts an exhibit of "explorabilia".

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

Underneath one of the region's most historic roads lies the home of Plato's successor.

The ruins of this ancient fortification wall sit in the middle of a quiet, residential intersection.

Scars of this building's past life as a violent prison still cover its walls.

This striking sculpture of Icarus honors Greece's fallen flyers.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

The ruined doorway is a portal to the building's turbulent and torturous past.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

The beautiful baroque library of the Hapsburg empire.

An exquisite Baroque church in Vienna's old town.

The Habsburgs' royal collections of art and wonders.

This former insane asylum now holds a pathological anatomy museum.

This small shrine is dedicated to the designer of the first Russian fighter jet and his brother, who became Chairman of the Presidium of the Supreme Soviet.

A B-17 bomber stands as a memorial to the residents of Tulare County who served in World War II.