America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The library's graceful rotunda is like a bibliophile's temple.

The first modernist church in Europe.

Op-art architecture designed for happiness.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The Canaima airstrip in Venezuela keeps an antique DC 3 plane in its camp.

This "floating island" plateau sits 7,671 feet above the forest floor.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

This cemetery features modernist statues as strange as its name.

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.

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

Thirty architectural gems from the 19th- and early 20th-century Tokyo were restored and relocated to this space.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

Home to the world's oldest wooden building.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

The cemetery houses the remains of Jun’ichirō Tanizaki, one of Japan's most famous novelists.

Established over a thousand years ago, this family-run teahouse continues to serve skewers of sweet rice cake to this day.

This 14th-century temple is also known as the "Temple of the Golden Pavilion" for its gorgeous gilded reliquary hall.

A shrine contains nearly 200 statues of the Buddhist deity Jizo, dressed in bibs by parents who have lost a child.