A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

An incarceration museum on the spot of possibly the oldest prison in England.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

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

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

Banksy gives themself artistic license with this piece of London street art.

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

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

A quiet memorial to those who died saving others in the heart of the City of London.

Black cat statues guard this temple-like Egyptian revival factory.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

A mysterious artist-run cabinet of curiosities and library.

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

An unusual round church in London with a Templar past.

This South London cemetery holds the remains of more than 15,000 people.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

This Roman quarry once held secret masses and smuggler's contraband and is now home to rare species of bats.

This dreamy street will transport you to wintertime in Victorian England.

England's foremost purveyor of funeral furniture hasn't changed a bit since the 1960s.