Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

The largest greenhouse in the world is home to over one million types of plants.

Scattered throughout London are ancient remnants of the city's former bounding wall.

400-year-old garden, restored to beauty.

The remains of Crystal Palace Great Exhibition of 1851.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

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

A fantastic castle rumored to be the birthplace of King Arthur.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

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

Hear the quietest sound from across the dome.

Eighty million natural history specimens call this gargantuan museum home.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

An unusual round church in London with a Templar past.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Famously misunderstood wonder of the ancient world

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

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.