A Perpetually Under construction Park.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A spooky defunct railroad tunnel now part of a sprawling trail.

These curious caverns have been home to mushrooms, gangsters, and disco.

This double-arched masonry highway bridge is the only structure of its kind in Minnesota.

Three legendary, living albino buffalo roaming their pastures for all to see.

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

This simple badlands butte is the highest point in North Dakota and may be the only high point to charge admission.

No one's quite sure where this quirky university tradition originated.

Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

Advice-columnist's bell tower, paid for with pennies.

A stealthy Apache hideaway that became the haunting site of a mass grave.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

This beautiful ridge-top trail is dotted by tiny homes apparently built by a group of itinerant fairies.

This park is home to well over 100 handmade birdhouses.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

This historic graveyard was partially paved over to create a streetcar line.

The American rainmaker and a burst dam.

Tucked away behind an unassuming set of shops is a must-see series of stunning murals.

The Giant Lemon of Lemon Grove.

A couple turned their front yard into an artistic masterpiece.