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The first round of the competition features a battle of the dragons, as a cabin built to resemble a dragon's eye faces off against a dragon's claw.
This time the two pop-up hotel cabins battling it out are a luxury design inspired by a Welsh coal pit and a modernist unit made of slate.
The cabins this time include a laser-cut project inspired by the legend of King Arthur, a double-decker tepee, and a luxury getaway on a sea fort.
The competition concludes as two cabins fight for a place in the final. This week an ambitious treehouse cabin takes on a tin-clad cabin with a trick up its sleeve.
