London's Victorian Tower of Babel.

Hear the quietest sound from across the dome.

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

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This centuries-old pub boasts a collection of more than 4,500 snippets of neckties from around the world.

The lantern carried by the infamous Guy Fawkes when he was arrested while attempting to blow the houses of Parliament and the King of England to smithereens

This battery powered bell has been ringing since 1840 and is one of the worlds longest running science experiments.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

This 11th century tower is said to be the oldest building in Oxford.

Used as an example in one of the first dictionary entries for "museum" in 1706.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

Above an abandoned Underground station, this charming bookstore is home to strange antiquities and literary works.

In this medieval fish bowl, the carp weren't pets.

This iconic high-rise residential block was one of the last to be built in the Brutalist style.

This 400-year-old house tells a tale of witchcraft and woodwork.

You can enjoy a (possibly haunted) stay at the medieval Norman castle that was once a favorite hunting lodge of King John.

This old Victorian bathhouse is fed by an ancient spring.

This forgotten chalk mine was reopened thanks to a massive effort from the local community.

Journey through this open museum where even employees remain true to period.

One of the oldest amusement rides in existence was a huge disappointment to its creator.

The world's only managed flock of mute swans was established as a factory for monk meat but is now an adorable sanctuary.

Soak up some local history in this restored Edwardian era swimming pool.