Elevated freight railway turned wildly successful urban park.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

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

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

Willy Wonka would love this weird half-a-home.

World's largest collection of serial killer artwork and other macabre exhibits.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

One man's quest for the ultimate road trip vehicle.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

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

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

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

The anatomical-pathological collection of a man who changed surgery.

The television series' iconic giant foot was borrowed from this classical painting.

Eighty million natural history specimens call this gargantuan museum home.

The curios of pharmacist and collector Henry Wellcome.

One part local history, 99 parts gruesome haunted house.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.