The best place in the world to buy tinned fish.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

The legendary building that needed ghostly approval before being built.

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

This twice-relocated "Usonian" home is among the smallest built by master architect Frank Lloyd Wright.

At 207 feet, one of the world's longest continuous escalators.

America's first public mental health facility.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

A tribute shrine where the Space Invasion street art movement started.

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

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

Paris' linguistic guide to the international language of, yes, love.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The original "capsule building" is a masterpiece of Metabolist architecture.

This abandoned railroad got a new life as a scenic promenade cutting through the city of Otaru.

This site commemorates the life of a Japanese scientist who dedicated his life to the discovery of diseases.