The first plantation museum in the United States to focus on the lives of enslaved people.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

The giant birds honor two native North American species.

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

Known as "Toronto's Flatiron."

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

The remains of the oldest bone-headed dinosaur in North America.

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

Only six people can sit inside this delightfully quaint sanctuary.

Soaring over the Niagara Whirlpool since 1916.

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

A 19th-century architectural wonder designed by the "father of the skyscraper."

The seat of Buffalo government is a gorgeous Art Deco palace.

The site of the Scopes Trial contains a small exhibit dedicated to the famous case.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

The castle that provided the setting for much of 'Monty Python and the Holy Grail' is now a pilgrimage site for fans.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

A bronze statue of a low three-legged seat commemorates a piece of furniture that started a riot.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.