This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The oldest stone house in Paris was built by its most famous alchemist.

A sense of bewilderment encounters visitors when they happen upon this former railway bridge.

The Liverpool street made famous by the Beatles is real.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

A faded reminder of what was once a common sight in London during the Blitz.

This iconic high-rise residential block was one of the last to be built in the Brutalist style.

This unassuming building produced some of the world's most famous bells.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

Tombstones and enigmatic inscriptions hide within a vault beneath a popular London arts venue.

This overlooked street light once served as a KGB dead letter box.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

This castle ruin in the middle of nowhere is a gem for wildlife enthusiasts.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

A striking public sculpture representing the period of martial law in Communist Poland.

A collection of old neon signs from all over Poland line a secluded courtyard.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

There are thousands of tributes and memorials to the King, but none quite like this one in a Kraków city park.