These engineering masterpieces are a dominant feature of the Belfast skyline.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

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

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A repurposed railway tunnel with otherworldly acoustic characteristics.

Abandoned for over 20 years, this art deco seaside swimming pool is a magnificent waste.

It was once the longest continuously running cinema in the United Kingdom.

This charming, narrow-gauge railway in the Thames Estuary is sometimes referred to as the "Train to Nowhere."

Unusual British home built to disguise a water tower.

Manchester salvaged this sculpture of the adopted Mancunian when it was no longer wanted in Ukraine.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

An English artist has turned an unassuming ex-council house into a time-lost house of mystery.

A plaque claims this artwork outside a children's hospital was used in the 1998 Quidditch World Cup.

The last of the 19th-century booze-free bars has been slinging teetotal tonics for over a century.

At this snack-shack in the bucolic British countryside, you can still get a slice of socialism with your spot of tea.

This pub can leave even the sober feeling slightly unsteady.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Rome's semi-secret peephole vista is also a former Crusader stronghold.