First planned industrial community in the United States.

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

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

A lush green oasis in the middle of Chicago.

A hollow cement depiction of time's inexorable effect on the human body.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

An enormous park-like oasis, full of famous Chicagoans' graves.

A Bibliophile's Dream.

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

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