One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Tiny memorials honor individual victims of the Holocaust.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The celebrated eyesore created by starry-eyed sweethearts.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The video game-themed street art first popped up in the French city.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

Atop this former dutch railway office sits an interstellar work of art.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.

One of the last remaining movie theatres in the country that features a rear-projection system.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

This massive World War II calculator hearkens back to the days when "computer" was a job title.

Impossibly life-like natural history models created out of glass by a father and son.

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

Three prestigious academic collections come together to create a world-class natural history museum.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

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

The massive machine creates cracking displays of indoor lightning.

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