Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

One of the last functioning antique elevators in Chicago.

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

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

The faint remains of a Polish news empire still linger.

Landmark Chicago building narrowly avoided destruction.

Orthodox church partially financed by Tsar Nicolas II.

Once an ornate movie theater remade by Catholic Charities.

These mansions date back to Chicago's days as a brewer's paradise.

An eccentric park and pool.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

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

This landmark of the Chicago silent film industry may not be in the picture business anymore but it still stands proudly.

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

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

A towering Art Deco movie palace made to look like a Mayan temple.

In a quiet north Chicago neighborhood rests a stunning relic of the golden age of earthenware design.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

A source of civic pride, though the reason for its construction is unknown.

After an Illinois church was struck by lightning and burned down, Frank Lloyd Wright designed this replacement.

The first home and studio that belonged to the famous architect.

The only dome home to be owned or occupied by dome inventor Buckminster Fuller.

Louis Sullivan’s dark, swirling cast-iron designs envelop a popular department store in this Chicago landmark.