Sweden
Sea caves and porpoise pods along a dramatic headland where Skåne plunges into the Kattegat.
Kullaberg pushes into the Kattegat like a fist of granite, its sea caves entered by kayak, its clifftop trails patrolled by peregrines above and harbour porpoises below. A light has warned ships off this headland for centuries. The water is colder than the calendar suggests and clearer than you expect.
The Kullen peninsula is southern Sweden's wildest edge: gneiss cliffs dropping straight to sea, caves pocking the shoreline — Silvergrottan glows blue-green with reflected light — and a reserve managed for both the climbers bolted to its walls and the porpoises working the tide rips off the point. This is Sweden's best shore-based chance of seeing the little whales surface. Autumn pours migrating raptors over the headland; summer fills the coves below Mölle with swimmers who take their granite neat. The lighthouse at the tip is Sweden's brightest, and the trails to it roll through juniper heath that smells of gin and salt.
Solo
Cliff trails and sea caves make a physical, sensory day — a kayak, good shoes and a willingness to get cold.
Couple
Porpoises from the clifftop, caves by kayak, dinner in Mölle's harbour — adventure and reward in equal measure.
Friends
Sea kayaking, sport climbing above the water and post-adventure seafood — Kullaberg runs a full group day.
Fried herring with mash at a Mölle harbour table after the cliffs.
Ice cream on the harbour wall — the Kullen ritual regardless of weather.

Wadi al-Gemal
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Wadi Shab
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Espíritu Santo Island
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Red volcanic cliffs fold around clear coves reached by boat from La Paz.

Isla Coiba
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Fishing was banned to stop prisoners escaping; the reef has been thriving ever since.

Sonfjället National Park
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A lone rounded mountain in bear country, protected for the bears since 1909.

Abisko
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A rain-shadow valley whose famously clear Arctic sky draws the aurora hunters north.

Glaskogen Nature Reserve
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Eighty lakes threaded by canoe routes through Värmland's silent forest.

Kungsleden (Northern Section)
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A hundred kilometres of Arctic tundra trail where the sun refuses to set for weeks.