Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

Go inside to really appreciate this 500-year-old technological masterpiece.

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

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

The world's oldest optical museum is an odd collection where the exhibits look at you.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Hear the quietest sound from across the dome.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

Horsemen once used this tilting post during jousting practice.

This strangely dressed taxidermy creature has a heartbreaking story.

A unique journey back in time to an early 20th-century fairground.

A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.

Where Venice's gondolas go for a tune-up.

100 year tradition of fist fights, marked by marble footsteps.

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

A network of concealed passageways lies within a busy London Underground station.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Scattered throughout London are ancient remnants of the city's former bounding wall.