"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

A bizarre house filled with an astounding array of collections.

Two hula hoops appeared on the tree after a storm, and the collection kept growing.

The highest point in Iowa, while not that impressive to mountain states, has earned its own monuments.

Piled high inside this warehouse and coffee shop are salvaged goods that span every corner of the globe.

Eight feet in diameter and more than 24 feet around.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

Beating out all other concrete competitors, this massive garden feature's pointy hat has earned it a world record.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

Strange physical sensations and optical contradictions keep visitors coming back for more.

A lavender labyrinth so large it’s visible on Google Earth.

Astounding collection of coin-operated games and automata.

This sprawling bookstore spans four floors and has more than a million books in stock.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.