An exquisite tunnel of cascading flowers.

A solitary tree has grown up all alone on Lake Wānaka, backdropped by the beautiful Southern Alps.

Abandoned railway line circling the city of Paris.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

On the Oregon coast there is a natural hole that seems to be draining the sea.

The centuries-old trees lining both sides of this dirt road may become Madagascar's first natural monument.

Woven tree art gives this towering Australian woodland a touch of mystical whimsy.

The longest hedge maze in the world.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Hundreds of boat-shaped headstones fill this graveyard as part of a centuries-old custom with mysterious origins.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Science fiction's grandfather has a fittingly marvelous tomb.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

The tallest residential building in Africa is an unsettling Brutalist monolith.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

An abused and forgotten metropolis, abandoned for centuries.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.