Blackfoot petroglyphs of southern Alberta which date back as far as 7000 B.C.

Despite being dead since the 1970s, this Canadian tree is kept upright and intact by adoring locals.

A majestic hotel that also stands as a historic relic.

An American city stranded at the tip of a Canadian peninsula where strict adherence to the "49th parallel rule" became problematic.

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

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

When the USA donated cement and funds to expand the airport in Laos, the Laotians built a massive monument instead.

In 1909, the steepest and most difficult piece of track on the Canadian Pacific Railway was replaced with a series of spiralling tunnels cut into the mountains.

The highway's southernmost spot is a beloved local attraction.

Not for the faint of heart, this long pedestrian bridge rewards those who brave the wobbly walk with a beautiful view.

To get to or from this Canadian ghost town, you'll need to cross 11 single-lane bridges.

Mounds of fine golden sand that can rise nearly 500 feet tall.

A quirky "castle" formerly belonging to a famous British inventor.

An octagonal folly tower overlooking the sea.

400-year-old garden, restored to beauty.

An architectural oddity hides in plain sight on this iconic London bridge.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A marvel of Byzantine engineering under the streets of Istanbul.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

An outcropping plays host to the largest collection of pre-contact petroglyphs in Saskatchewan.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This engineering marvel is the longest bridge in Canada and one of the longest spans in the world.

This strangely specific landmark will let travelers know when they are half way there.