A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

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

This elaborate towering structure was once famed for its revolutionary height.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

The first American department store, and home to the largest operating musical instrument in the world.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

A historic and oft-filmed prison stands in a Chicago suburb.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

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

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

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

A gothic church spire sits atop this skyscraper, the tallest church in the world.

This titanic Catholic church in Chicago is also a refuge of the fictional cult-favorite wizard detective Harry Dresden.

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

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

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

Over 1,000 pieces of one of the most niche art objects imaginable: the glass paperweight.

On the Hudson resides one of the largest clocks in the world.

This evocative New Jersey statue memoralizes the Polish victims of a Soviet massacre.

This blowhole is supposedly caused by a trapped monster.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.