In this March, 2015 photo, a person sits at an upright piano that had been hauled up to Topanga Lookout in the Santa Monica Mountains in Calabasas, Calif. For a couple of days last week, a Southern California hilltop was alive with the sound of mystery. Hikers venturing to Topanga Lookout found a battered upright piano sitting on a graffiti-scrawled concrete slab with a panoramic view over the mountains between Calabasas and the Pacific Ocean. Turns out, the piano was used for a music video by Seattle-based artist Rachel Wong. The cinematographer, Michael Flotron, says he and four others used a dolly and rope to haul the 350-pound instrument a mile up the trail on Tuesday. After the shoot, it was too dark to get the piano back down. Flotron says people seem happy to leave it there. But if necessary, he'll haul the piano back down. (Photo by Michael Flotron/AP Photo)

American artists have drawn criticism after making stunning, intricate sculptures by pouring hot liquid aluminium into anthills.

Farhad Moshiri, an Iranian artist working a lot with carpet media using it as a mean to joke about consumerism culture, was one of the participants of the group show Love Me Love Me Not of Yarat! pavilion curate by Dina Nasser-Khadivi (read on her curating Lalla Essaydi's Harem here) at Venice 2013 Art Biennial. The installation consists of more than 500 carpets depicting celebrities-covered magazines from all over the world.

A stone giant exhausted after his long travels decided to rest a while and drink from a pond far below. He lay down and started drinking from the crystal clear pond. So delicious was the water that he was unable to quench his thirst no matter how much he tried. Weeks have passed, months, years. The body of the stone giant became one with the hills and even his tongue has turned to water. This might seem like a fairy tale, yet you’ll be able to see this stone giant if you ever come to Wattens, Austria. He’s still there, guarding the entrance to Swarovski Kristallwelted, otherwise known as the Crystal Worlds. This is a one-of-a-kind theme park that was created by the people who first created Swarovski crystals.

Exhilaration beyond imaginable, intense concentration on a single point, and complete freedom of soul – all these things very accurately describe the art of highlining. Highlining is a branch of a new sport called slacklining, which involves walking on special webbing secured between two points. Andi Lewis is one of the most famous slackliners in the world, particularly due to his performance during Superbowl Halftime Show in 2012. He never fails to surprise people with an amazing stunt or a project. This time he and his friends have created a completely incredible hand-knitted hammock located hundreds of feet above the ground. Just getting to this hammock requires immense skills and bravery. But once you’re finally there, you can rest a while, before mustering up the courage to go back across a narrow line with nothing but thin air beneath your feet.

Jo Jo performs at the Q102 s*xy Singles 2012 the at Hotel Palomar on January 26, 2012 in Philadelphia, Pennsylvania. (Photo by Gilbert Carrasquillo)