A century-old tradition has culminated in a small but singular collection of feline effigies.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

One of the shortest streets in York has an especially odd name.

There has been an astronomical clock on this spot since the 14th century.

Hamburgers are intensely proud of their tunnel beneath the river.

Cold war icon and onetime "hole" in the iron curtain.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

An industrial relic is now one of Europe's most staggering art spaces.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

A fascinating insight into daily life in the Eastern Bloc.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This classic restaurant features a gorgeous mirror-clad room.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Inside a former cabaret, seven floors of erotic art.

The celebrated eyesore created by starry-eyed sweethearts.

This bridge was constructed from the rubble of the infamous Bastille.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

The first green space constructed on an elevated viaduct.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

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

The curious underground history of keeping Paris clean.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.