A sweet symbol marks the place where torturous executions were once carried out.

These plaques located in a court preserve a small piece of Edinburgh's history.

This mundane post marks the old location of the city's main postal hub.

A roadway designed for a visiting monarch.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Hidden beneath the streets of London is a secret subway that only carried mail.

It is against the law to obstruct the view from the top of this English burial mound.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

Abstract dinosaur models in London.

The remains of Crystal Palace Great Exhibition of 1851.

A sculpture of a famous ape who was once a beloved household name in London.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

A much-loved local landmark pays tribute to the shipbuilding past of this area.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

A monolithic monument in Greater London.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.