When ecosystems collide in the arid Southwest.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

This naturally-sourced hot spring is now home to a clothing-optional resort.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Known as "Toronto's Flatiron."

The remains of the oldest bone-headed dinosaur in North America.

The remains of a once-famous hotel that also acted as an artist colony.

A space-age 1950s pavilion on a secluded path is full of Toronto history surprises.

This knick-knack-covered house (complete with a matching van) is a charming oddity in the middle of a modest downtown neighborhood.

This half-ton piece of the Alps sits at the base of the CN Tower.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

A former Canadian Pacific Railway station turned liquor store, the first and only station in Canada visited by British royalty.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

In the back of a bustling factory lurks a quiet museum honoring the history of Canadian sugar manufacturing.

The giant birds honor two native North American species.

Along with his smaller donkey pal, he guards the museum’s exhibits and memorabilia.

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

This massive, ancient stone was disassembled and then put back together again.

A memorial to the tens of thousands of Irish who fled to North America during the Great Famine.

The oldest landmark of Toronto is a testament to shifting sands.

The Incredible Hulk, Yoda, Mulder and Scully, and many many others watch over the mean streets of Toronto.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This unusual structure may be on its way to becoming a cultural landmark in Toronto.