The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

The only remaining historic maritime signal station in the United States.

A strange mark in the stone fence of a cemetery fabled to have been made by the Devil himself.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

A swirling spectrum of stained glass dazzles visitors who enter this subway station.

The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

Part arcade, part museum, this collection features vintage and modern pinball machines.

This huge 12-foot concrete moose on the coast of Nova Scotia is the grandest of the sculptor's giant creatures.

The final resting place of 121 victims of the RMS Titanic, 42 of which may never be identified.

This tiny abode has been covered in the art of the little old lady who made her life and living there.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

The narrowest street in Paris.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This demon atop the Notre-Dame de Paris looks utterly bored.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The beautiful baroque library of the Hapsburg empire.

Baroque celebration of the end of the Great Plague of Vienna.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.