A former electrical substation is now home to an eccentric junk art masterpiece.

A grove of colossal man-made flowers built to collect the sun's rays.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

This Old Testament garden features 100 plants from biblical times.

A giant ball made from pieces of an old Jeep.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

One Pittsburgh musician's decades-in-the-making memorabilia collection is on display at this rock-n-roll curio shop.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

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

A beautiful oddities shop crammed with strange and morbid curiosities.

This shop filled with oddities and knick-knacks is named for a 19th-century charlatan.

An abandoned incline railway site is now a green space with six acres of trails connecting hilltop neighborhoods.

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.

When oil was discovered just outside of Pittsburgh, the city became home to this regional stock market.

When it comes to handsignals (and colonialism) rock always beats scissors.

A hoard of sky catalogs, astrophysical journals, even the works of Galileo and Copernicus.

One of only two sites in the United States containing the remains of Buddha.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

A relic of FDR's brief foray into utopian urban planning.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.