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

20,000 pieces in a Frank Gehry-designed building.

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

This punny mirror of another Wisconsin attraction is exactly what it sounds like.

Robots, lasers, and whoopee cushions, oh my!

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.

An architecturally-focused antique shop.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

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

Small-town museum dedicated to outer space ... and bicycles.

A forgotten Cold War relic hidden in the outskirts of a Wisconsin city.

Find out what it sounds like when doves cry at Prince's recording studio estate turned museum.

A circus of light and sound forms a sensory ode to an iconic train that will never pass through town again.

This whimsical sculpture garden is a local treasure.

This deceivingly ordinary warehouse hides an enormous collection of pop culture treasures.

Moving, mind-blowing metal sculpture work of an outsider artist.

Trinkets and toys lovingly handmade by maximum security prisoners.

This Maine bridge may be the last wire-supported bridge of its type in the world.

3,200-square-foot mural inside Dartmouth Library depicts the history of America with images of human sacrifice, ancient gods, and other unspeakable terrors.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

Beautiful natural falls where Satan once ruined a pot of beans.

America's oldest archaeological site or a muddled case of wishful thinking.

A surprisingly large number of show waterski teams are located here in Wisconsin.

Whimsical sculptures dot a woodland path surrounding their creator's old summer cottage.