High-end antique collection housed in a centuries-old church.

Murals of the wild parties once held on the frozen River Thames.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

The secret wartime bunker built on the platforms of an abandoned Tube station.

This secluded walkway overlooks a magnificently wild London green space.

A Roman spa buried deep beneath the City of London.

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

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

The breadfruit-adorned final resting place of the infamous Captain of the HMS Bounty.

There's an exclusive Beefeaters pub hidden in the Tower of London.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

A comic book store that puts the marvel back in marvellous.

A museum wholly devoted to juvenescence.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

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

This small collection of rare books was uniquely locked up for safe keeping.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

Ship-sized kinetic sculptural fantasy.

The townhouse where the English poet created some of his most influential work has been preserved in tribute.

This home on a quiet suburban street is completely covered with vibrant mosaics.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."