Upside-down trees serve as natural flower pots in this hanging garden of Alaska.

A reversed traffic signal that was once violently misinterpreted as a statement on British-Irish relations.

This piece of Australian modern art is part joke and part history.

It might look like a doghouse, but this small structure was actually built to house a spirit from Maya mythology.

One of the world’s most colorful cemeteries, where each pigment is symbolic.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.

A meandering boardwalk across the bogland leads to a "stairway to heaven" with sublime views.

A breathtakingly steep set of stairs is carved directly into the face of the sea cliffs of Bonifacio.

A fantastical group of cliffside stairways, bridges, and twisting paths carved out of stone provide a surreal coastal hike.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

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

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

Featured in one of the most iconic scenes in cinema history.

Largest outdoor staircase in the United States.

A fire lookout atop a glacial pinnacle is reached by climbing three vertiginous flights of stairs.

Cut into a sheer cliff face, these stairs are the only way to reach a secluded Scottish harbor.

These 4,444 wooden steps straight up a mountain were built to serve a hydroelectric power station but these days, they're mostly used by hikers.

A grueling 699-step stairway to a heavenly view of the island of Saint Helena.

A total of 999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

America's post-nuclear-attack chambers of Congress.

This harrowing climb along West Virginia's jagged spires is one of the only Via Ferrata on America's east coast.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.