One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

10,000 flowered plants bloom in the City of Roses.

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

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

An overlooked and unassuming engineering marvel.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

This ancient abandoned church in a remote part of Turkey is in danger of falling over.

The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.

Hindu temple of the dead home to hundreds of long-tailed macaques.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This elaborate towering structure was once famed for its revolutionary height.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The only quarter of the Old City not dedicated to a major world religion.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Elevated freight railway turned wildly successful urban park.

This black shoreline is made up of exploded lava particles.

Watch the newest land on the planet form before your eyes.

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

San Francisco's newly reopened hands-on science museum.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

Gold Rush-era tombstones line the park's paths.

Golden Gate Park's historic collection of plants.