One of the world's largest collections of pathological specimens.

London's smallest police station is barely the size of a phone booth.

The final resting place to 300 Victorian-era pets hides inside the city park.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

The anatomical-pathological collection of a man who changed surgery.

Hear the quietest sound from across the dome.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

Catacombs turned marketplace.

Eighty million natural history specimens call this gargantuan museum home.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

Rebuilt remains of a temple to Roman god Mithras.

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

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

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

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

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

The Isle of Wight’s “Island Line” serviced by former London Underground trains from the 1930s.

This foolish Victorian sea fort was converted to a deluxe hotel.

A museum in south England celebrates the amphibious vehicles that cruise on a cushion of air.

This colossal war machine is now a living museum dedicated to underwater warfare.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

Sail in for a ’dam good slice.