Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

Home to a protest movement, a bombing, and a dramatic change in labor history.

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

Stalinist skyscraper built with help of cryotechnology.

Hidden in a metro shop under a shopping mall, this small museum tells the story of one of the world's largest urban transit systems.

The tallest hotel in Europe.

World's largest bell sits on the grounds of the Kremlin in Moscow.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

A massive Montreal stadium that has seen nothing but trouble since its inception.

A historic Montreal market that was the city's agricultural hub for over century.

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

The biggest museum dedicated to insects in North America, one of the largest in the world.

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

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.

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

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

This impressive Boston holy house is the American mecca for Christian scientists.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.