Is the world's quirkiest Northern Lights hotel?

The designers behind one of the world’s quirkiest hotels are back with an exciting new concept guaranteed to appeal to wellness fanatics and adventure buffs alike – a floating hotel and spa in Sweden’s remote northern reaches.

The Arctic Bath Hotel and Spa will drift on the Lule River in Norrbotten County, where it will give guests the chance to indulge in a mix of Northern Lights-watching and ice-bathing.

To prevent the entire thing being swept out into the Gulf of Bothnia, the hotel will be anchored into place close to the small town of Harads – and frozen into place during the winter, when the whole river ices over.

Plans for the structure have been drawn up by the same team behind the Treehotel – an eclectic collection of treehouses also within the Harads area, with outlandish designs ranging from a bird’s nest to a flying saucer.

With a similar offbeat aesthetic, Arctic Bath’s circular, tree-strewn look was inspired by the region’s history of logging, when the river was used to transport timber to the sawmills further south.

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The main body of the hotel itself consists of four saunas and a treatment room arranged around a central ‘cold bath’ (kept at a bracing four degrees Celsius).

There’s also an adjacent hot bath should swimmers feel the need for something a little warmer.

The six rooms are all stand-alone – or rather float-alone – structures that bob alongside the main building.

All come in standard Scandi-minimalist style, with blond wood interiors, wood-burning stoves and large skylights for watching the Aurora Borealis from the comfort of the bed.

Additional features at the hotel will include a restaurant and lounge.

The Arctic Bath is expected to open this autumn, with bookings to become available six months in advance through Off The Map Travel.