Revelers celebrate the Indian festival of Holi on a boat cruise around part of Manhattan on March 17, 2012 in New York City. During the Hindu festival of Holi, also known as the Festival of Colors, which marks the arrival of spring, participants throw colored powder and water on one another. Many of the New York participants are Indian-American. (Photo by Mario Tama/Getty Images)

Gothic enthusiast poses during the annual Wave-Gotik-Treffen music festival on May 26, 2012 in Leipzig, Germany. The event began in the 1990s and has since grown into one of the biggest gatherings of Goth scene followers in Europe with around 20,000 participants. (Photo by Adam Berry)

Doesn’t taking a nap in a hammock outdoors sound lovely? Perhaps not when you’re hanging in the air, thousands of feet above ground, between two mountains in the Italian Alps! Which is exactly what these adventurous folks did during the International Highline Meeting in Monte Piana, Italy. (Photo by Sebastian Wahlhuetter Photography)

Yulin, a city in southern China, celebrates the summer solstice by throwing a festival that involves the slaughter and consumption of as many as 10,000 dogs. Not everyone in China supports such practices, however; 65-year-old Yang Xiaoyun, a retired teacher who runs an animal shelter in Tianjin, traveled more than 2,400 km (1,500 miles) and spent more than 7,000 yuan ($1,100 or €990) to save 100 dogs from certain death.

Model Bella Hadid, right, walks the runway with other models at the end of the Fashion For Relief 2018 event during the 71st international film festival, Cannes, southern France, Sunday, May 13, 2018. (Photo by Arthur Mola/Invision/AP Photo)

Passengers climb to board an overcrowded train at a railway station in Dhaka August 8, 2013. Millions of residents in Dhaka are travelling home from the capital city to celebrate the Muslim Eid al-Fitr holiday, which marks the end of the Muslim holy fasting month of Ramadan. (Photo by Andrew Biraj/Reuters)

Supermodel Iman (center) introduces her husband David Bowie (L) to Rihanna (R) at the DKMS' 5th Annual Gala: Linked Against Leukemia honoring Rihanna & Michael Clinton hosted by Katharina Harf at Cipriani Wall Street on April 28, 2011 in New York City. (Photo by Andrew H. Walker/Getty Images for DKMS)

Model Heidi Klum in front of Concorde jet after arriving for Victoria's Secret fashion show at Cannes Film Festival on May 16, 2000. (Photo by Marion Curtis/DMI/The LIFE Picture Collection/Getty Images)