Koen Olthuis and Dutch Docklands have announced a new project: a five-star floating hotel off the coast of Norway named the Krystall. Reminiscent of their Maldives development the Greenstar, this cold-climate sister project will take the form of a six-pointed ice crystal. As with Dutch Docklands' other floating structures the development will be low-impact, and it's designed to "blend in with the "winter environment" between the most beautiful fjords." The Krystall will float offshore from the northern city of Tromso, located within the Arctic Circle. Designed to be completely self-supporting and self-sustainable, the hotel will have a diameter of 120 meters, and facilities will include 86 guest rooms, conference rooms, and spa and wellness facilities. It's also billed as a perfect spot for viewing the Northern Lights due to its glass roof. The five-star luxury and spectacular nature of the project is aimed at attracting wealthy visitors from Japan, Russia and Europe. As Olthuis told CNN, "In the hotel, you'll float through hallways lined with cool, futuristic blue shapes, recline by a fireplace faced in transparent bricks resembling ice blocks and sleep in rooms tricked out in minimalist, winter-themed designs." But true to Olthuis's green principles, the design is not just about the aesthetics. To be built in dry dock and then positioned in place, the hotel will not leave a lasting footprint on its location. "That's the only way to bring a hotel to such a precious and beautiful marine environment," he says. Floating structures are a pragmatic design concern for the development company, as they ameliorate the risks to coastal properties associated with rising sea levels. As Olthuis explains, "We live in a dynamic world where static buildings do not bring us the needed flexibility. Building on water brings us new space for expansion, safety against floods and flexibility to adjust developments without demolition whenever needed." The hotel is set to open in December 2016.

Would you spend US$ 300 a night to sleep underground? You might, once you see the jaw-dropping designs for China's latest hotel project. For more than a decade, China has been a front-runner in the world's skyscraper race. Now the country is taking the pole position in digging "groundscrapers" -- enormous structures built mostly underground. As reported CNN International, most recently, ground has been broken on construction of a high-end hotel at the foot of Shanghai's Tianmashan in a 100-meter-deep pit. Developed by Shanghai Shimao Property Group and to be managed by InterContinental Hotels Group, the hotel, named InterContinental Shimao Shanghai Wonderland, is expected to extend 19 stories into the bottom of the pit. Once completed, in late 2014 or early 2015, the deepest story of the luxury resort will be approximately 700 meters lower than the top floor of the world's-highest-hotel-to-be, the Shanghai Tower J Hotel in Shanghai Tower, set for completion around the same time. Located about 45 kilometers southwest of Shanghai's city center, the pit in Tianmushan is 100 meters deep, 240 meters long and 160 meters wide. The lowest 20 meters are filled with stagnant rainwater, which the hotel will retain. Construction of the 380-room InterContinental Shimao Shanghai Wonderland commenced last month. The 19-story hotel will have three levels above ground, and 16 underground, including an underwater restaurant. A 60-meter glass curtain will be built to mimic a waterfall next to the resort's main structure. The pit has served as a quarry since the 1950s, then it has been abandoned since the year 2000. Shimao purchased the surrounding land in 2006 in order to build Shimao Shanghai Wonderland, a large-scale theme park integrating hospitality, leisure and entertainment elements. The hotel is planned as part of the wonderland complex. Designed by UK-based engineering firm Atkins, the company behind the ostentatious Burj Al Arab hotel in Dubai, the quarry hotel design bagged a Gold Medal at last year's commercial real estate MIPIM Asia Awards. Industry experts believe nightly room rates will start from US$ 320, twice the price currently charged by nearby five-star hotels. Shimao is investing a total of US$ 555 million in the 428 thousand square meter Shimao Shanghai Wonderland, of which US$ 95 million will go toward the subterranean resort. Hotel planners are considering taking advantage of the site's surrounding cliffs by hosting activities such as rock climbing and bungee jumping.

Creative artists from all over the world arrived to Swedish Lapland to create the largest Ice Hotel in the world. The winter season 2010/2011 will be the 21th for the Ice Hotel in Jukkasjarvi, Sweden. The idea of Ice Hotel was born in 1990's; Jukkasjarvi has been always attracting ice carving artists, as it is located beyond the Arctic Circle. One winter day in 1990, when French artist Jannot Derid was holding an exhibition of his ice carvings in the igloo (a snowhouse originally built by the Inuit) , the number of visitors turned to be larger than it was expected and lack of available rooms forced some of them stay in that igloo at night. Locals covered blocks of ice inside the igloo with reindeer skin and let visitors sleep on them, inside their sleeping bags. In the next morning, the visitors, who spend the night in igloo, were enthusiastically speaking about the "magic" opportunity to sleep inside the ice shed and also clamed that it was not cold inside at all. In the second half of November, when in Jukkasjarvi temperature drops, locals scrape tons of ice blocks and snow from nearby Torne River. This year merely 22 tones of snow and ice was used to create the Ice Hotel on 5500 square meters area. Main bearing columns are equipped with steel rods from inside, which help to prevent them form collapse. These columns are created by spraying snow on the steel construction and allowing it to freeze into rock solid mass. Then, ice walls are built around the columns and large blocks of ice are placed inside the rooms, to let the artists to carve on them. The construction works continues for at least one month. Usually the Ice Hotel is completely ready at the end of December, but this year visitors can admire a real "Ice Miracle" from the beginning of the month. The guests can stay in any of 60 rooms, and also visit the ice church, bar, Art Suits and etc. The price for per night stay in world's original and largest Ice Hotel starts from $458! Yes, it's not cheap, but given the fact that it takes one month work of 50 skilled artists, and soon in Spring the hotel will melt back into the Torne River, the price is quite acceptable. Well before the opening of the next Ice Hotel-tourist season, Jukkasjarvi invites everyone to special snow carving lessons.