From fiery festivals to nature's most dazzling "sky-dance", interest in the night skies is booming, with "noctourism" poised to be a major travel trend in 2025.

Interest in the night skies is booming. Booking.com recently named "noctourism" as a top travel trend for 2025, with their survey of more than 27,000 travellers finding that around two-thirds have considered going to "darker sky destinations" to experience things like starbathing (lying down and looking at the night skies) and witnessing once-in-a-lifetime cosmic events.

"The cool thing about night adventures is you see so many different sides to a destination, by just staying up late or rising early," says Stephanie Vermillon, author of the new book 100 Nights Of A Lifetime: The World's Ultimate Adventures After Dark. "Our senses are heightened, and there are things you see at night that you don't see any other time, so everything feels exciting and new."

It was a 2010 trip to Morocco that sparked Vermillon's interest in all things nocturnal. "I grew up in Dayton, Ohio, which has terrible light pollution," she tells the BBC. "Then I went to the Sahara Desert and camped under the stars – I saw the Milky Way and two dozen shooting stars that night. I went home, took an astronomy class and later started hunting Northern Lights, which got me curious about what else happens around the world after dark."

Vermillon believes that major events such as the April 2024 total solar eclipse or the 2024-2025 peak in aurora activity has led to a "bump" in the number of people wanting to experience dark skies. There are also now more than 200 Dark Sky Reserves across the globe. "The great thing about the night sky is the perspective it gives you – it's humbling and grounding," she says. "You can experience pure awe."

Starry skies and aurora borealis might be the headline acts, but there's plenty more to do after dark in cities or out in nature. "You see a city so differently at night," Vermillon says. "I think of it as a city letting its hair down – it's more relaxed. I've also done night safaris, where it's more about listening than just seeing, and I've seen water sparkling with bioluminescence, which looks like magic. Everything at night has a little extra sparkle."

Here are five of Vermillon's favourite after-dark experiences, from fiery cultural festivals to nature's greatest sky dance.

Lucky travellers in the right place at the right time can witness one of the most unforgettable experiences on Earth: the aurora borealis, or Northern Lights. Created by charged particles from the Sun colliding with the Earth's atmosphere, the main activity occurs above Earth's magnetic poles, with Iceland right in the thick of the action. During the Northern Lights season (September to April), colourful displays streak across the skies for more than 100 nights, as long as cloud cover doesn't impinge. "I've never felt goosebumps from nature more than when I'm watching the Northern Lights," says Vermillon. "You're watching nature dance. It's the most magical thing."

Strong storms can be seen with the naked eye, though many photographers also create wondrous images using long exposures on cameras. Witnessing or capturing the aurora usually means wrapping up in thick clothing and waiting for hours on a bracing hillside or glacier, far from towns or cities. But there's a warmer alternative: kicking back in Iceland's naturally heated pools. The land of fire and ice straddles the Mid-Atlantic Ridge, with geothermal energy from far below ground creating more than 700 hot springs and pools. "You can see the Northern Lights in warmth and........

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