Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

The narrowest street in Paris.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Sitting atop San Francisco's tallest hill, a cross honors the victims of the Armenian genocide.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

A classic advertising icon immortalized in regal bronze.

Fantastic collection celebrating the final send-off.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

The oldest university museum west of the Mississippi retains its 19th century feel.

A mysteriously dark cemetery monument fuels stories and legends galore.

This zombie-themed restaurant stands out in the heart of corn country.

Millions of dollars worth of sculpture decorate this Iowa city center.

San Francisco's newly reopened hands-on science museum.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

A winding path built in secret on the edge of the continent.

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

The key to turning shifting dunes into the green oasis of Golden Gate Park.