Perched atop Norway 's snowy Seven Mountains sits the stunning Tubakuba cabin . But the off-the-grid property , made of glass and wood , is n't just known for it 's sweeping views of the city of Bergen below . In order to reach the small architectural marvel , guests are required to crawl through its tunnel-like entryway , which remarkably resembles an otherworldly black hole . High above the city of Bergen in Norway sits the Tubakuba cabin , which boasts a very unusual , vortex-like entryway . Made up entirely of glass and wood , staying overnight in the cabin is free for families with young children . Designed as part of a workshop at the Bergen School of Architecture , OPA Form Architect , Espen Folgero was the mastermind behind the striking cabin . It 's name is inspired by the tuba , thanks in large part to its curved entryway that opens like a vortex to the woods outside . The interior is made of plywood , while the exterior is crafted from burnt larch that has been treated with a traditional Japanese method called Shou Sugi Ban to prevent fungal decay . It 's the portal-like entrance that 's really something special , however , made up of curved shavings of pine and untreated larch , which will turn gray with time . The interior is made of plywood and has floor to ceiling windows along one side to allow guests to experience the breathtaking views . There is no electricity and the cabin 's amenities are basic with only a wooden stove , bare wooden platforms and lofted sleeping space . To reach the inside of the 14-square-metre cabin , everyone must crawl through the house 's 'black hole ' tunnel entrance . Best of all , for families with young children , it 's free to stay overnight in the playful space . The 14-square-metre cabin offers basic amenities , such as a wood stove , bare wooden platforms and a lofted sleeping area . There 's no electricity , but the property is so small that it does n't require much heating . And it 's the view that guests truly stop by for : large windows overlooking the rocky mountainside give visitors the impression that they are 'floating ' above the valley below . Every detail of the tunnel was considered , right down to the the use of untreated larch wood , which will turn grey with time . These drawings show exactly how the architecture students envisioned guests relaxing in the lofted sleeping spaces . Referred to as a 'wooden bubble , ' the property has since been nominated for a European Union Prize for Contemporary Architecture . Sketching was an important part of the students ' learning process and helped them identify structural problems and solutions . The tuba-like tunnel is not just a way to reach the cabin 's interior , it 's also a play space in and of itself for children if the hut is closed . Speaking to Fast Company , architect Espen Folgero explained the concept behind the avant garde house . 'The entrance is shaped like a mouth of a tuba to experiment with wood as a material , to give children a place to play even if the hut is closed , and to force adults to crouch to get in , even if kids do n't have to , ' he said . Perhaps unsurprisingly , the Tubakuba has been nominated for the European Union Prize for Contemporary Architecture-Mies van de Rohe Award .
The off-the-grid property , made up entirely of glass and wood , sits high above the city of Bergen in Norway . Designed as part of a workshop at the Bergen School of Architecture , the cabin boasts a vortex-like tunnel entrance . Families with young children can stay overnight for free to enjoy the sweeping views of the valley below .