The United States' first transcontinental automobile road came to its end at this spot in San Francisco's Lincoln Park.

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

Art in the form of a winding, man made crack in stone.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

This tall and trim architectural oddity is one of the skinniest buildings in San Francisco.

These six walrus head statues harken back to a time when this area wasn't far from the oceanfront.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

This painted marvel is San Francisco's 400-foot ode to urban biking.

This Alamo Square mansion is rumored to have hosted satanic rituals and other occult practices.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

A monument dedicated to the civil uprisings that took place during the Pots and Pans Revolution.

This tiny museum's sizable collection is jammed into a former underground public toilet.

Iceland's tribute to its thankless civil servants.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

This beautiful, historic church looks like something out of a simpler past.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Medicinal spa created with the discharge from a geothermal energy plant.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

At night, this glittering musical tunnel draws skaters and photographers.

Three plaques mark the spot where the "forgotten father of broadcasting" worked.

From the Difference Engine to the Cray-1, all under one roof.