When flour explodes, it's not a pretty sight.

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.

The only arched bridge made of stone on the entire Mississippi River.

The oldest remaining frame residence in Minneapolis.

The oldest continually used church in Minneapolis also sells great meat pies.

This French Canadian classic is a specialty of the oldest continually used church in Minneapolis.

A butcher shop in Minneapolis has all the meats and cheeses you’d expect from any of its kind—except that all the products are vegan.

Come for the giant taxidermy lion, stay for the knick knacks at this Minneapolis curiosity shop.

This iconic water tower and failed bandstand is open for panoramic views once a year.

This unusual lava tube spouts seawater during high surf.

Large tower used for simulating radiation of Hiroshima bomb and the tallest object ever relocated.

These markers are used to determine the ground stability of the Strip.

An old railroad grade built for the construction of Hoover Dam is now a recreational trail featuring several tunnels and sweeping views of Lake Mead.

A lovely park home with a few interesting guests.

An ode to one of the dirtiest jobs during the construction of the Boulder Dam.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.

The outcropping is graffitied with the name of the beloved musical Muppet television series.

A wealth of pop culture statuary and green chile dishes give this roadside restaurant clout.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

Considered by many to be one of the most dangerous highways in Alaska.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

This super-sized statue is the only public memorial to the deal that ended America's neutrality during World War II.