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

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

This enormous fish commemorates the unplanned release of brown trout into a Michigan river.

Illegal drag racing two stories beneath Chicago’s streets.

A hidden grotto on the grounds of the Kane County Government Center.

Tucked away amongst townhomes lies a restored, early 20th-century tea house and garden, the only remains of a historic estate.

An Art Deco gem that held together the artistic heart of an agricultural community for 92 years.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

A monument celebrating the idea of reaching inaccessible places.

Golden Gate Park's historic collection of plants.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The face of a woman pushes its way through the earth.

The study has wall paneling from a 17th century ship.

A six-story-tall golden pyramid, surrounded by a moat.

This historic Illinois "Muffler Man" has been converted from axe-touting lumberjack to rocket-wielding space ace.

A sprawling outdoor museum filled with larger-than-life works of art.

The NBA player's elaborate former home is now a ghost of its old glory.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

The final resting place of the great navigator, or maybe his brother.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.