A British couple drink hot chocolate at Chillout cafe in Dubai May 12, 2013. Chillout, owned by UAE's Sharaf Group, is the first ice lounge in the Middle East, with temperatures set at –6 degrees Celsius (21 degrees Farenheit). The cafe, with its illuminated interiors, curtains, paintings and seating arrangements, is all made of carved ice and frozen sculptures. (Photo by Ahmed Jadallah/Reuters)

Living on the edge of Exmoor, Rob takes his inspiration from the rolling countryside surrounding his home, where each Bough House sculpture takes several months to construct. The designs do not follow an explicit plan or process, each piece is unique. They evolve and flow freely, as part of a creative journey which has no natural limit, whilst also revealing great logic and engineering integrity. Every aerial walkway or staircase leads to a room - there are no dead-ends and every turret and tower can be reached.

A woman walks past a painting by Jenny Saville entitled “Red Stare Head IV” on display in the Royal Academy of Arts' Summer Exhibition on June 2, 2011 in London, England. The Summer Exhibition is the world's largest open submission contemporary art show, now in its 243rd year, with over 12,000 entries received from 27 countries. The exhibition features over 1100 works of art including: painting, sculpture, photography, architecture and film, it officially opens to the public on June 7, 2011. (Photo by Oli Scarff/Getty Images)

A creature bathes at the Robolights art installation by Kenny Irwin Jr. in Palm Springs, California December 15, 2014. The installation consists of hundreds of whimsical robot and other themed sculptures created from recycled materials including golf carts, kitchen appliances and microwaved smart phones, and is open to the public each holiday season on the sprawling Irwin family property. (Photo by David McNew/Reuters)

Some people joke about having clowns at their funeral, but how about having a coffin that looks like a gigantic cellphone? It is impossible to tell at the first glance that these colorful sculptures are actually coffins. The coffins were made by Kane Kwei and his assistant Paa Joe more than twenty years ago and have been a somewhat grim tourist attraction ever since. These coffins were probably made as an advertisement for the actual business, since it would hard to imagine someone actually ordering a coffin such as this.

Russian artist Salavat Fidai is obsessed with things in miniature, and he has previously painted miniatures on pumpkin seeds and carved sculptures into the graphite tips of pencils. For this project, he's gone for something a little bit bigger, but not by much. One of Fidai's favorite painters is the legendary Vincent Van Gogh, so he decided to do a series where he recreated some of Van Gogh's famous works on matchboxes.

Beneath the Swedish capital lies an intricate web of underground train lines. More than 90 of the 100 stations in the 110km tunnel system, sometimes referred to as “the world’s longest art gallery”, have been decorated with paintings, installations, mosaics and sculptures by 150 artists since the 1950s. After spending a couple of weeks exploring arctic Norway and Sweden, London-based travel photographer Conor MacNeill headed underground to capture images of the metro stations. Here: A rainbow arcs over a girl on the platform of Stadion station. (Photo by Conor MacNeill/The Observer)

Glass artist Kiva Ford draws from his vast experience in scientific glassblowing to create perfect miniatures of wine glasses, beakers, and ribbon-striped vases, some scarcely an inch tall. A member of the American Scientific Glassblowers Society, Kiva creates instruments for scientists who require one-of-a-kind designs for various experiments. The same techniques and tools used for scientific equipment also apply to his artistic practice including the miniature works you see here, as well as larger sculptures, and ornate drinkware.