The blinking light atop the iconic landmark has been sending secret messages for decades.

A Chicago Movie Palace Lost to Time.

The beloved home to all publications indie, erotic, and punky.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

No one knows how many bodies are in this vault in a Chicago public park.

To find the "unicorns of the deep" you've got to go downstairs.

Orthodox church partially financed by Tsar Nicolas II.

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

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

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

One of the largest underground systems runs under Canada's largest urban center.

A memorial to the tens of thousands of Irish who fled to North America during the Great Famine.

Two thirds of this Montreal neon icon has survived to flash another day.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A giant donut stands as a popular symbol of Los Angeles iconography.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

A half-size replica of the World Trade Center towers above Tulsa.

Landmark Chicago building narrowly avoided destruction.