There aren't too many operational funiculars around, but Pittsburgh has two!

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

A true roadside icon standing on the same plains that the herds once roamed.

Fake rail crossings mark the site of an influential doctor's demise.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

Masterful ceramic fountain and map of the Pacific Basin.

A man-made island in scenic San Francisco Bay.

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

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

The remains of a ruined mansion memorialize the 1906 earthquake.

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

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

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

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

A massive ultra-modern church presents a science-fiction view of Catholicism's inclusive future.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Elvis's own personal tropical hideaway.

This Lady Liberty is the oldest replica of its kind outside the state of New York.

Everything in this miniature world was handmade from matches, paperclips, wires, tin cans, and other everyday objects.

This unique building in the main square stands out among the city's typically Baroque architecture.