La Palma, Spain
Cueva de Las Palomas (Las Palomas Lava Tube)
Tour the inside of a massive lava tube formed during a 1949 volcanic eruption.
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La Palma, Spain
Tour the inside of a massive lava tube formed during a 1949 volcanic eruption.
Ludwigsburg, Germany
This outdoor library provides around-the-clock access to around 7,000 books.
Helsinki, Finland
The tiny, studious rodents greet visitors to the National Archives of Finland.
Culver City, California
Known as the "Hobbit Houses," these storybook homes look like they're straight out of the Shire.
Poolesville, Maryland
This ruined quarry once produced the distinctive red sandstone used for construction projects in Washington, D.C.
Jingzhou, China
China has many statues of the general and war god, but none are as epic as this.
Valencia de Alcántara, Spain
One of Europe's largest groups of dolmens remains largely off the typical tourist track.
Coron, Philippines
This curious fresh and salt water lake holds a secret that draws in deep divers from around the world.
Kawasaki, Japan
Curious onlookers have suspected this strange structure is a secret government base.
Albuquerque, New Mexico
This opulent Pueblo Deco movie palace melds Art Deco and Native American motifs.
Mexico City, Mexico
Get a privileged view over Mexico City's Historic Center from a terrace right in its heart.
Japan
The world's longest tunnel with an undersea section.
Tokyo, Japan
Discover the past, present, and future of packaging in this unique Japanese museum.
Alxa, China
Sited in an Inner Mongolian desert are the remnants of an important trade stop along the Silk Road.
Nea Tiryntha, Greece
Step inside an ancient beehive tomb built for a mysterious cult hero.
Fuling, China
This top secret Chinese military megaproject is the world’s largest human-made tunnel structure.
Morrisville, North Carolina
Wander through more than 20,000 square feet filled with an amazing collection of orchids.
New Orleans, Louisiana
This Art Deco airport was once deemed “the air hub of the Americas.”
Morocco
An old airplane engine forms an unusual cairn atop this Moroccan peak.
Nafplio, Greece
This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.
Tokyo, Japan
People from around the world visit the shrine of Japan’s legendarily loyal dog.
French Guiana
An abandoned colonial French prison notorious for its hellish conditions.
Stockholm, Sweden
A rare surviving Victorian greenhouse designed specifically to house giant water lilies.
New Delhi, India
This beautiful 16th-century necropolis marks an astonishing feat in heritage conservation.