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.

One of three sites in England that house the National Collection of Arms and Armour.

A thousand year old oak tree survives in Liverpool.

The quiet field that inspired one of the most famous songs of all time.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

This nondescript building hides an entrance to an underground nuclear tunnel system.

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites.

Be on the lookout for the symbolic insect all over the city.

This police call box harkens back to an era of pre-radio communications, and has a rather unique feature.

It's known as the "Full Monty school" thanks to its role in the beloved British comedy film.