The vaulted ceiling is home to a scurry of “squirrelgoyles.”

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

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

A monument to the military service of America's greatest traitor refuses to even name him.

A contemporary fresco movement illustrates the region's rich history.

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

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

The world's longest covered bridge is a quaint and incredible wooden tunnel.

The largest axe on the planet contains a time capsule that seems like it may never be discovered.

This engineering marvel is the longest bridge in Canada and one of the longest spans in the world.

Cliffs that hold fossils, including the earliest known reptile, dating back more than 300 million years.

A mysterious spot where the laws of gravity seem not to apply.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

A shoreline exhibit describing the disastrous first attempt by the French to colonize North America.

This candy-striped tower is the farthest east you can go in the United States.

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A unique sculpture park that specializes in the huge and bizarre.

This giant disembodied horse head seems to balance impossibly on its nose.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

This colonial mansion has been home to a staggering number of American historic figures.