Detroit’s downtown castle is one of the oldest structures in the city.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

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

Willy Wonka would love this weird half-a-home.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

Lost subway station nestled beneath Toronto's busy commuter line.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

The drama of nature in full effect in this Nevada State Park.

A miraculous natural phenomenon known as "the spring that breathes."

Hundreds of trees made from glass bottles make up this forest on Route 66.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

This Minnesota town celebrated the state's 100-year anniversary by creating a massive ode to nature's smartest bird.

Largest magic museum in the United States with more than half a million pieces of memorabilia.

These strikingly barren, rolling red hills were caused by bad farming practices.