Eat the ultimate iteration of Portugal's most beloved pastry.

A unique seaside cave where Aleister Crowley faked his own death.

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

Originally known as the State Lunatic Hospital at Norristown, this campus stands as a fascinating piece of medical history.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

The home of the founder of American landscape architecture puts his principles into practice.

A legendary West Hollywood bar where celebrities shoot pool with the locals.

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

A strange, heartwarming, decades-old declaration of love on a New Hampshire roadside.

These tree-filled acres are also filled with history, hiking and a celebration of Appalachian crafts.

This sculpture dedicated to a pioneering labor unionist and civil rights activist is located inside a busy Boston train station.

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.

A giant sculpture head with an optical illusion dedicated to the longtime conductor of the Boston Pops.

During the holidays, a vintage subway train whisks New Yorkers back in time.

The extremely grey columns of one of Mexico City's most iconic beltways are slowly gaining a bit of color.

A small building that loosely resembles a tooth is appropriately used as a dentist office.

The collection of intricate sculptures includes one carved from a mammoth's tusk

66,000 pieces of art, donated by one of the world's richest men.

Part bookstore, part café, and part forest.

A jewel of the Mexico city skyline now slowly crumbles after surviving an earthquake.

The famous artist couple lived and worked here, in two different houses connected by a bridge.

The Mexican painter Diego Rivera created this unusual museum to display his collection of pre-Hispanic artifacts.

Inside the cloister of the Temple of San Juan Bautista is a ceiling decorated with gold Baroque illustrations.