Boardwalk trails provide a special doorway to national parks

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Rare 'super bloom' blankets Death Valley in a carpet of wildflowers

Water hole in Portugal looks like a gateway to a fantasy world

12 irreplaceable World Heritage Sites that are on the brink

Aerial views of fairy tale castles from around the world

How to become a Google Street View trekker

Could Nevis be the first carbon-neutral island in the world?

What are hoodoos? The science behind these surreal formations

Sark, the world's first dark sky island, boasts more than the Milky Way

Female pilots are flying high