Limestone arches over hidden pools.
Swim among millions of stingless jellyfish.
Dive among submerged sculptures.
Town beneath an active volcano.
Monumental, tightly-controlled capital.
Snorkel over warm volcanic bubbles.
Abandoned flying-saucer monument on a Balkan mountaintop.
Roman forum, Romanesque churches and the Sea Organ — steps that play music from the waves — on a Dalmatian peninsula.
Set eyes on Río Abiseo, the UNESCO park almost nobody may enter — cloud-forest ruins and a monkey back from the dead
Fly over the Nazca Lines, giant desert figures etched into Peru's coastal plain two thousand years ago
Green railway tunnel formed by trees arching over a working track.
Nine giant steel spheres from Expo 58 — Brussels’ space-age landmark.
Try banana wine, a unique alcoholic beverage made from fermented bananas.
A pentagonal caravanserai-temple built over a natural gas vent, used by Zoroastrians and Hindu pilgrims.
A sixth-century monastery on a flat-topped mountain, reached only by climbing a leather rope.
Life-sized wooden effigies of the dead, watching from balconies cut into the cliff graves.
The Lighthouse of the Mediterranean has erupted every twenty minutes for two thousand years.
The Maasai Mountain of God, the only volcano on Earth erupting cold black carbonatite lava.
Not the highest mountain, but its summit is the furthest point from the centre of the Earth.
Lagoon of healing white mud.
The world's smallest national capital.
Swim in a deep garden swimming hole.
Walk through a forest of razor coral pinnacles to a ladder that drops into a hidden sandy oasis with palm trees between the cliffs.
Waves forced through lava tubes blast spray 30 metres into the air — locals throw coconuts in to launch them.
Jagged coral pinnacles of the interior.
Snorkel over WWII bulldozers and trucks the US Army dumped into the sea.
A 70-metre crater of natural gas that has burned since 1971 — camp beside the "Door to Hell" at night.
About 300 tailless macaques live on the Upper Rock — Europe’s only wild monkeys, and famously light-fingered.
The original vine-bungee land diving.
Tea-coloured creek recreation spot, its water dyed by rainforest tannins.
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