A monument celebrating the idea of reaching inaccessible places.

This massive circular sculpture may not be a portal to other worlds, but it does inspire the mind to imagine them.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

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

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

The highest point in Washington state is a volcano covered in glaciers.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

10,000 flowered plants bloom in the City of Roses.

A sculpture of a salmon swimming through a brick building.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

2,000 barrels of aging beer hidden in a warehouse at the Brooklyn Navy Yard.

The secret behind these nostalgic light fixtures: They're not as old as they may seem.

A popular European tradition makes its way to the states on one of America's most famous bridges.

One of only two commuter aerial tramways in the United States.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This theater opened in 1998, but both the building and the puppeteers who perform there have a distinguished history.

With a history dating back to Victorian times, this architectural gem is a rare New York tourist haunt worth visiting.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.