That massive white and grey building climbing up the hillside at Lørenskog is SNØ, Norway's only indoor ski hall. Yes, Norway has an indoor ski hall. The country that invented skiing.
The irony wasn't lost on anyone when it opened on 15 January 2020 - during what turned out to be the warmest January in Norwegian recorded history. Some called it a monument to climate change. The management insists it's meant to complement winter, not replace it.
The building is 500 metres long. Inside it's kept at minus 2 to minus 4 degrees year-round. There's an 80-metre vertical drop, a four-person chairlift, and slopes for beginners, racers and freestylers. Above the alpine slope, suspended from the ceiling, is a 1.5 kilometre cross-country track. They also have one of the world's tallest indoor ice climbing walls.
The architects designed it to look like a glacier melting down the slope. It's built into the hillside, which makes it more energy efficient than you'd expect. The cooling system works as a giant heat pump, actually exporting more heat energy than it uses in electricity.
If you're travelling with children in summer and want them to experience snow, it's an option. You can rent all equipment there. There's a hotel attached, and a shuttle runs from Lørenskog station.