Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

A grove of "candelabra redwoods" deep in California's Lost Coast.

This massive redwood tree has a hole in the base big enough to drive through.

The fossilized remains of ancient California redwoods.

Under the shadow of its towering parent tree, a rare specimen of sequoia produces ghostly white leaves.

At night, a grove of towering redwood trees growing through the pavement block out all light from the so-called “Dark Park” of Madrone Avenue.

Nursery with extensive collection of flesh-eating plants operated by the author of "The Savage Garden."

Read a book next to a Midtown waterfall.

This frequently-photographed waterfall takes only a short hike to visit.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

Nondescript elevator doors open to reveal a stunning, surreal world.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Two New York rooftops are home to the largest rooftop soil farms in the world.

The Vatican of the movie industry turned into an actual church.

This mysterious marker puzzles pedestrians and infuriates geographers.

Nine nice parcels of land along a flight path offer a quiet respite... until a plane soars overhead.

A retired subway car stands alone in a field in the middle of Queens.

This Orthodox Church's exterior is rather unorthodox.

Once a month, an Indonesian feast appears inside an Elmhurst church hall.

A temple belonging to the largest Buddhist order in South Korea nestled in the middle of New York City.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.