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Photo: Machu Picchu Llama

Adventure & Exploration

Climbers, surfers, more

Photo: Close-up of an African lion

Animals

Killer whales, Bengal tigers, crocs, more

Photo: Terra-cotta warriors, China

History

Temples, tombs, iconic moments, more

Photo: Western road

Landscapes

Beaches, valleys, scenics, vistas, more

Photo: This aerial view captures a large wave crashing into the coastline of an island in the Republic of Palau

Nature & Weather

Storms, rain forests, more

Photo: A close view of bright bird feathers

Patterns in Nature

Animals, landscapes, more

Photo: Geisha

People & Culture

Inca, geishas, bushmen, more

Photo: Jupiter moon Io

Science & Space

Aurorae, snowflakes, Saturn, more

Photo: Blackpool Beach

Travel

Thailand, Rome, Miami, Antarctica, more

Photo: Butterfly fish in French Polynesia

Underwater

Giant squid, coral, sea lions, sharks, more

Photography Features

Photo: Men fishing near waterfalls

Photo of the Day: Best of June 2009

See the most popular Photo of the Day images from June, featuring Snoqualmie Falls, an aurora borealis, the Colosseum, Angkor Wat, a Marrakech market, and more.

Photo: Two tree frogs staring nose-to-nose

Life in Color: Green

How green is your valley? Very—and so are frogs, snakes, snails, butterflies, rolling hills, and more. Go green with this gallery of soothing images.

Photo: Sky and trees reflected in lake

Patterns in Nature: Reflections

Ponds, lakes, rivers—still bodies of water around the world serve as a looking glass for nature. Take a peek at these all-natural self-portraits.

Photo: Longfin bannerfish

Gallery: Best Wallpapers of 2008

See the most popular wallpapers from 2008, featuring a stunning Iranian mosque, the first full view photo of Earth, and more.

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Special Advertising Section

Photo: Men wearing kilts

Photo Contest

Think your photo is the "Ultimate" winner? Submit your best in six different categories.

Photo: Man picking a tea leaf

Photo Gallery

See how Lipton is dedicated to sustainable agriculture. View photos from Boyd Matson's trip to Africa.

Photo Tip of the Week

Smile!

Always read up about native customs before traveling to a foreign culture. Always smile.

More Photo Tips

New Photo Books From National Geographic

Photo: Visions of Paradise book cover

Own the latest images from our world-renowned photographers!

New Sudoku Games

Photo: Sudoku puzzle

Play Traveler's Sudoku, featuring stunning photography from around the world.

Green Effect: Vote Soon

Photo: Vote sign

Whose Earth-saving idea should win $20,000? Check out the finalists now, and vote July 7-20!