Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

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

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

An 80-year-old house built out of newspapers.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

The hero of the women's suffrage movement birth home is now a museum dedicated to her legacy.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

Known as one of the most climbed mountains in the world, this barren peak is permanently bald thanks to an anti-wolf fire.

This wooly sculpture supposedly marks the birthplace of a famous nursery rhyme, or not.

This classic red schoolhouse is said to have been where Mary and her little lamb went to school.

This railroad tunnel was once the longest in Massachusetts.

A former zoo turned public park, where visitors can hang out in the old animal cages.

The ghost town that was one of New Hampshire's first settlements now exists as a park detailing its history.

A 12,000-year-old bog boasting rare plants and fauna.

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

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

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.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."