The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

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

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

Macabre astrological automaton clock dating to the late 1400s.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

A hand-built folk art installation covered with messages of God's love.

Elevated freight railway turned wildly successful urban park.

The ghostly remains of an accidental sea.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The legendary building that needed ghostly approval before being built.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

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