A reveller (R), dressed as “Diablos de Luzon” (Luzon Devils), stands next to a person dressed as a “Mascaritas” during carnival celebrations in the village of Luzon, Spain, February 6, 2016. The “Diablos” cover themselves in a mixture of soot and oil and adorn their heads with black-stained bull horns as they parade throughout the village with cowbells clanging around their waists to expel the evil spirits. (Photo by Sergio Perez/Reuters)

Every year, participants in the Burning Man Festival descend on the playa of Nevada's Black Rock Desert to form a temporary city – a self-reliant community populated by performers, artists, free spirits, and more. Last week, an estimated 68,000 people came to Burning Man 2013 from all over the world to dance, express themselves, and take in the spectacle. Gathered below are some of the sights from the festival, which lasted a week and came to its conclusion yesterday

A Haka is performed before the ceremonial departure of the 'vaka' or traditional canoes ahead of their cross-Pacific voyage from Viaduct Harbour on April 13, 2011 in Auckland, New Zealand. Powered by sun and wind only, the 15,000 nautical mile journey to Hawaii via French Polynesia will set off on April 15, aiming to raise awareness of environmental issues such as ocean noise pollution, acidification and anoxic waters, whilst recapturing traditional Pacific voyaging. The votyage is named “Te Mana o Te Moana” meaning “The Spirit of the Sea”. (Photo by Phil Walter/Getty Images)

Few people haven’t heard about the ancient city of Persepolis, which lies at the foot of the Mountain of Mercy (Kuh-I-Rahmat). In ancient times, Persepolis was the capital of the Achaemenid Empire. Regretfully, it was burned by the Greeks in 330 BC after they looted the immense treasure of this city. It is said that Greeks needed 5,000 camels and 20,000 mules to carry all the treasures from Persepolis. The only thing of Persepolis that has survived the wear of time is the ginormous stone terrace 530 by 330 meters adorned by elaborate stone sculptures. It is amazing how intricately detailed some of the sculptures are, despite the fact that they were created many centuries ago.

Grumpy Cat in Las Vegas, America on August 5, 2014. Grumpy Cat aka Tardar Sauce has died on May 14, 2019 at home in Arizona at the age of seven due to complications from a urinary tract infection. Her family's statement said: “Besides being our baby and a cherished member of the family, Grumpy Cat has helped millions of people smile all around the world – even when times were tough. Her spirit will continue to live on through her fans everywhere. Grumpy's Family – Tabatha, Bryan and Chyrstal”. (Photo by Mediapunch/Shutterstock)

A devotee of the Chinese Samkong Shrine walks with flowers pierced through his cheeks during a procession celebrating the annual vegetarian festival in Phuket, Thailand, October 16, 2015. The festival, featuring face-piercing, spirit mediums and strict vegetarianism celebrates the local Chinese community's belief that abstinence from meat and various stimulants during the ninth lunar month of the Chinese calendar will help them obtain good health and peace of mind. (Photo by Jorge Silva/Reuters)

Bikers are the knights of the modern times. They ride their steel horses; they drink and brawl and have their own strict code of honor. Some people view them as land-dwelling pirates; however, they are so much more than that. Photographer Sandro Miller is one of the few people who decided to look deeper than their rugged exterior, realizing that it takes more than a Harley Davidson bike and a leather jacket to make a biker. A true biker cannot be chained to a single place. The spirit of the true biker demands change, it seeks adventure, and it thirsts for freedom! (Photo by Sandro Miller)

Greece-based illustrator, Charis Tsevis took his fascination with our wired world to develop his series of colorful and detailed wire illustrations. He uses all types of wires, including USB cords and phone cables, and creates form figures, faces and animals by tangling them together. Tsevis says, “All of them have to do with the relationship between the network and the human body and spirit”. Photo: “The Conquering Lion: Plug into the power of Reggae”. (Photo by Charis Tsevis)