The prototype for all Nazi concentration camps.

One of the few surviving street funiculars in the world.

The bell that once tolled atop a lost Edinburgh gate now hangs for all to see.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

The Scottish Reformation leader's grave was paved over and is now a parking lot.

This 16th-century close preserves an unusual piece of Edinburgh's transportation history.

This alley off Edinburgh's Royal Mile contains remnants of the city's seedier history.

A six-ton wedding present for the King of the Scots.

The most loyal of little dogs, or a Victorian era publicity stunt?

The final resting place of soldiers' loyal canine companions.

A monument stands at one of the starting lines of the Trans-Canada Highway, formerly the longest uninterrupted highway in the world.

One of Canada's tiniest museums tackles the world's largest turtle.

The colorful, smiling concrete silos of Vancouver.

One of the largest underground systems runs under Canada's largest urban center.

Iconic rock formations that allow for exploration during high or low tide.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Cliffs that hold fossils, including the earliest known reptile, dating back more than 300 million years.

A pixel art killer whale is frozen mid-leap in this Vancouver square.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

A stunning Victorian abbey and walled garden on a lakefront.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

The remains of this misplaced church were moved here stone by stone.