This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

What may be America's largest classic video game arcade lurks inconspicuously in a Chicago suburb.

This overgrown Illinois water park offers a whole new type of adventure.

This former nursery supplied plants for the creation of Chicago's largest park.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

The final resting place of the world's first nuclear reactor.

Before he was America’s most famous preservationist, John Muir was an ingenious mechanical inventor.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

The arboretum whose marshy soil sucked up the dreams of housing developers.

Every winter, the wind carves blocks of frozen water into beautiful abstract shapes inside this unusually curved tunnel.

The only place in America where anyone who wants can shovel coal aboard an antique train.

This supper-club-turned-concert-venue still serves drinks at its original rotating bar.

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

One of Frank Lloyd Wright's final works was this UFO church.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

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

A unique botanical garden housed in three giant geodesic domes.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

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