These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

A hands-off space for graffiti artists to hone and display their skills.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

One of Europe's oldest libraries.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

Hidden in plain sight, this creepy sculpture watches from above.

Home to the most complete dodo remains known - one head, and one foot.

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

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

Collection dedicated to brands, packaging and advertising.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

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

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

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.

Murals of the wild parties once held on the frozen River Thames.

Rebuilt remains of a temple to Roman god Mithras.

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

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