This ancient Egyptian obelisk still bears the wounds of World War I.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

The commemorative stone column conceals a secret laboratory.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

This coffee shop lies hidden beneath a historic church.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

Known as "Toronto's Flatiron."

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

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

This urban oasis is a marvelous meld of music and landscape architecture.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

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

This whimsical fountain pays tribute to Toronto's four-legged friends.

This colorful creation wasn't always a welcome part of Toronto's Moccasin Trail Park.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

This natural sea cave hides a small wonderland of natural turquoise beauty.

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

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