A beautiful geyser under environmental threat.

Beer lover's can-covered house.

Unusual house, in an unusual neighborhood, home to some very unusual peanuts.

A statue honoring 44 continuous years of greeting passing ships.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

"X" marks the spot of an echo chamber in the middle of a plaza.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

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

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

A lush indoor jungle fills this bustling Madrid transportation hub.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

A centuries-old church stands as a testament to Boston's "father of architecture."

The world's largest piece of copyrighted artwork.

Each August, one of the largest religious (and food) celebrations in the country is held in Boston.

Painstakingly built dioramas sit unnoticed in a Boston office building.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Ice cream stand, snack bar, and time capsule of milk conveyance.

The bears may be gone, but their old cages can still be found.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Two thousand artifacts from around the world collected by one woman who loved to travel.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A beautiful Victorian-era cemetery, complete with a miniature village.