A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

Visitors to this library are in for a real-world education in modernist architecture.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

This mural changes every few years.

This granite monument at the site of an ill-conceived tourist attraction is built from the same stone as the Mormon Temple.

Designed to allow funerals to proceed over the River Dulnain.

The haunting peak of an old church is all that remains of a drowned Brazilian city.

This Connecticut ferry has been operating in some form since 1655.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

The soaring gondola lines form the longest aerial cable car system in the world.

At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

Long before mobile phones or GPS were available, these sentry boxes provided help for motorists in need.

This massive subterranean fissure is known as the "underground Grand Canyon."

Why walk on this historical site when you can zoom down instead?

An enormous, inside-out glass globe built in 1935.

Once home to a thriving oil industry, this town now sits eerily abandoned.

Walk down these stairs to get an underwater view of Switzerland's Lake Zug.

A group of college students hauled a desk up a mountain more than 40 years ago. The notebooks inside have become a makeshift time capsule.

This lookout tower built in the 1930s is now an in-demand cabin with what might be the best view of the Seneca State Forest.

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

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

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.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Hidden in the hills of Western Pennsylvania lies one of the best-kept ghost towns in America that you can legally visit.