Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

The Pope’s secret escape route.

Two graffiti towers stand like ghosts of Vancouver's World War II-era defensive outpost.

A crumbling cliffside ruin hidden in the woods.

Saved by a logger, this Douglas fir is one of the last great old-growth trees in Canada.

This hauntingly stark structure is a relic of an industrial past.

One of the final concrete ships built before World War II is now a crumbling breakwater.

An operating lighthouse from the 1860s.

At least 14 twice-retired ships were sunk to make a lovely rusting breakwater in Comox Harbour.

The century-old plant starred as the villainous clown's lair in the miniseries based on Stephen King's "It."

Defying all odds, this lonely little tree found a home on a log sticking out of a Canadian lake.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

This Elizabethan hedge maze is one of only six in North America.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Citizens of Norway want to gift the peak of Mount Halti to Finland for its 100th birthday.

A little Lady Liberty stands in the Norway town where the copper for the real thing came from.

A naturally occurring tunnel in this Nordic mountain makes it look like it's been shot.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

Norway has built what may be the world's most beautiful public toilet.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

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

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

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