One of the world's premier laboratories for hydraulic engineering research takes full advantage of the water's power.

This old residential building was once the largest flour mill in the world.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

A stone face watches over the river.

Minnesota's oldest and deepest mine is now an underground physics laboratory.

The lowest point in South Dakota and the source of the Minnesota River.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

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

Portlandia is the second-largest copper repoussé statue in the United States.

A massive sea stack famous for its appearance in The Goonies.

A heavenly experience, right here on Terra Firma.

A sculpture of a salmon swimming through a brick building.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

Canada's largest graveyard boasts a lot of noteworthy artifacts as well as its own computerized mapping service.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

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

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America's largest viking stands in a Minnesota city that believes it was visited by the ancient nords.

Half of a waterfall goes into the river while the other half seems to disappear.

The basement bowling alley of this St. Paul dive bar is decorated with thousands of dollar bills.

A collection of pianos and more guaranteed to delight anyone interested in music history.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.