A historic house left in "dramatic still life."

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

Rebuilt remains of a temple to Roman god Mithras.

An unusual round church in London with a Templar past.

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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Hidden beneath the streets of London is a secret subway that only carried mail.

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

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

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

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.

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

The community pools that the community refused to give up on.

The tombstone epitaph of Millicent Milroy commemorates her "marriage" to King Edward VIII, Duke of Windsor.

The 18th-century church's stained-glass windows tell the story of the Haudenosaunee people.

A sacred Ojibwe site covered in pictographs next to Lake Superior.

This water-locked cliff face is covered in hundreds of ancient pictographs.

A plaque claims this artwork outside a children's hospital was used in the 1998 Quidditch World Cup.

Among the cliffs of the Elora Gorge is an oft-overlooked piece of celebratory graffiti.

A massive, fading granite poem is all that remains of one Whitman superfan's tribute to the famous writer.

This extensive nuclear fallout shelter built from 42 school buses could house 500 people in its tunnels.

The racehorse's headstone highlights a forgotten part of the Hendrie Park Gardens' history.

One of the last remaining covered bridges in the province of Ontario.