City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

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.

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

Preserving the memory of the narrow railroads that once crisscrossed the state of Maine.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

The world's oldest and largest museum of mass transit vehicles.

Utopia and nostalgia mingle at the site of Bronson Alcott's ill-fated agrarian commune.

This pavement line and accompanying statue commemorates the starting point for the world's oldest annual marathon.

This historic Victorian mansion is allegedly so haunted that a signed waiver is required to enter.

The largest collection of historic military firearms in the United States.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

There aren't too many operational funiculars around, but Pittsburgh has two!

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

The National Park Service’s best-kept secret with views that rival any in D.C.

Look closely and you’ll notice that the color changes a third of the way up the tower.

There’s a hidden military meme engraved on the World War II Memorial.

At the birthplace of American railroading, a world-class collection of historic trains.

Alexander Hamilton’s creation caused quite a bit of controversy.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.