The site of Paul Revere's historic two lantern warning.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Two thousand artifacts from around the world collected by one woman who loved to travel.

A beautiful Victorian-era cemetery, complete with a miniature village.

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.

Illegal drag racing two stories beneath Chicago’s streets.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

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

First planned industrial community in the United States.

This historic hotel invented the chocolate brownie.

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

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

These ruins have been linked to a sherbet factory that exploded, but the story may be entirely fictional.

Instead of faces, these sculptures have barcodes—statements on societal dehumanization.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Only known mainland rookery of the threatened Stellar sea lion.

An architect's childhood fantasy treehouse made real.

A modern frieze of ancient Grecian mythological figures playing a national pastime.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

This architectural oddity is an oasis of green on the outskirts of Valencia.

Granting the right of way to ships over surface traffic since 1917.

This working class sculpture pounds his hammer all the livelong day.

The spur that wouldn’t die.