What might be the oldest living tree in London has survived fires, bombings, and estate agents.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

An inverted staircase above the entrance to the Bethnal Green Underground Station functions as a memorial for people who lost their lives during the worst civilian disaster in the U.K. during World War II.

Dictionary Johnson’s favorite feline.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

This one has sailed five times as far as Sir Francis Drake's famous ship.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

The taxidermied remains of a once-great parrot.

England's “third-oldest college” has not graduated a single student in over 400 years.

A forgotten underground railway once whooshed trams beneath London.

Named for a doctor who made a breakthrough in London’s cholera epidemic, this 1800s pub was also the site of a queer “kiss-in.”

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

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

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

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

Rebuilt remains of a temple to Roman god Mithras.

The commemorative stone column conceals a secret laboratory.

An unusual round church in London with a Templar past.

London’s first road overpass is so old that it was originally built for horse-drawn carriages.

A unique tribute to the millions of animals who served and died for the British military.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.