Obscure Freemasons still live in D.C.’s largest private residence.

The privately owned cemetery that holds room for Washington's finest when they step down from life.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

It was once the base for a series of domestic terror attacks.

This leafy estate is worth $18 million and is so grand it has two mailing addresses.

A 1975 bylaw prohibits the construction of any building that would block the view of this Gothic Revival church.

Not for the faint of heart, this long pedestrian bridge rewards those who brave the wobbly walk with a beautiful view.

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

The New Central Library is a masterpiece of contemporary architecture in the midst of downtown Calgary.

The purported world's shortest international bridge connects a homeowner in Canada to his backyard in New York.

A statue in a Canadian zoo remembers the WWI origins of the beloved character Winnie-the-Pooh.

Lake within a lake.

The profile of one ill-fated deacon was emblazoned forever on this church window during the Halifax explosion.

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

The century-old plant starred as the villainous clown's lair in the miniseries based on Stephen King's "It."

It took over 100 years to decode this enigmatic epitaph for two buried brides.

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

The world's largest and most outstanding marl lake regularly changes color.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

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

This historic Victorian hotel has a scandalous history of affairs and murder.

Soaring over the Niagara Whirlpool since 1916.

Few other hotels can rival the grandeur of the Castle in the Rockies.