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

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

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

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

This massive, ancient stone was disassembled and then put back together again.

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

Lost subway station nestled beneath Toronto's busy commuter line.

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

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

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

One of Mother Nature’s geological gems, home to many prehistoric fossils.

A massive, fading granite poem is all that remains of one Whitman superfan's tribute to the famous writer.

A mysterious lake provides fresh water without any source, somehow restoring itself from atop its mountaintop perch.

A castle built for love, and abandoned due to heartbreak.

This water-locked cliff face is covered in hundreds of ancient pictographs.