In Jukkasjärvi, a village a few miles east of Kiruna, the proprietors of one hotel begin planning for a winter ice festival in March. That’s when they begin collecting some 5,000 tons of ice from the River Torne in order to prepare the Icehotel, the world’s coolest place to stay. Options for overnight stay include snow rooms, ice rooms, art suites, and the Northern Lights room, all of which range from about $300 to $900 per night. But the deluxe suite’s the only way to go. These rooms come with a critical amenity: heated ensuite bathrooms and saunas. Here: A man walks into a room in the Ice hotel in Jukkasjarvi, Sweden, December 16, 2015. (Photo by Ints Kalnins/Reuters)

The interior of the ship's bridge on the yacht Galeb is seen in the port city of Rijeka, December 16, 2015. Rijeka announced plans to convert the yacht Galeb used by Yugoslavia's communist leader Josip Broz Tito into a floating museum moored in the city's harbour. Now in disrepair, the 117-metre ship was an iconic symbol of luxury and used by Tito from the 1950s until his death in 1980 to entertain world leaders and celebrities, including the likes of Khruschev, Gaddafi, Indira Gandhi, Elizabeth Taylor and Richard Burton. (Photo by Antonio Bronic/Reuters)

A tour group wanders through block 7 of Eastern State Penitentiary in Philadelphia, Pennsylvania April 30, 2014. Opened in 1829, with the original corrective system of “confinement in solitude with labor”, the penitentiary housed about 75,000 inmates in its 142 years of operation. At Eastern State reunions, former inmates, staff and guard gather to share memories and trade stories and get a chance to describe their experiences in question-and-answer sessions with the public. (Photo by Mark Makela/Reuters)

Armed with only paper, graphite and coloured pencils – plus his vivid imagination – the artist creates remarkable drawings that leap from the page when photographed. The 32-year-old, from Alkmaar in Holland, began experimenting with anamorphic 3D drawing five years ago. Photo: Ramon Bruin’s 3D illustration of two twins drawing each other. (Photo by Ramon Bruin/Medavia)

Dancers attend a dress rehearsal for the new grand show “THE WYLD” at Friedrichstadt-Palast in Berlin October 2, 2014. Ten choreographers are working with 60 dancers from the world's largest show ballet company to create the flamboyant stage spectacle. The show's name, “THE WYLD”, represents human nature in its diversity and the wilderness of the big city – in this case, Berlin. The premiere of the 10.6 million euro ($13.5 million) show, the largest production budget in the 95-year history of Friedrichstadt-Palast, is on October 23, 2014. (Photo by Hannibal Hanschke/Reuters)

Women walk next to soldiers in Surcubamba, Peru, Thursday, May 21, 2015. The Joint Command of the Peruvian Armed Forces organized a humanitarian mission to Surcubamba, where health care was provided to families from nearby villages in this region called VRAEM, the acronym for Valley of the Apurimac, Ene and Mantaro rivers, where sixty percent of Peru's cocaine originates. (Photo by Rodrigo Abd/AP Photo)

It’s enough to make your head spin. The photographer Katherine Young set out to shoot spiral staircases in London, England to great effect, including this shot she calls the Downward Spiral Part III. (Photo by Katherine Young/Rex Features/Shutterstock)

Shortlisted. Dragonfly, North York Moors national park, by Jonathan Green: “In June I was at May Beck with some colleagues when someone spotted this Hawker perched in a gorse bush. I love the detail on the wings, and it’s rare to be able to get so much of such a small subject in clear focus. Getting a few scratches was worth it”. (Photo by Jonathan Green/2020 UK National Parks Photography Competition)