A lush green oasis in the middle of Chicago.

Huge abstract sculptures of the Puerto Rican Flag.

A beloved Chicago music venue offering cold beer and lots of “Friendly."

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

The 606 is a decade in the making.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

All of Chicago's wood-paved streets are long gone but two alleys remain.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

Frida Kahlo's childhood home, now a museum of her life and works.

The only castle in North America to ever house European sovereigns.

At a museum of everyday objects, it is the act of collecting that is really on display.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A famous flea market artist's studio that's full of odds and ends.

This popular pilgrimage site offers a hole filled with holy healing dirt.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.