A man stands on a mountain summit as he looks over the Inntal valley in the western Austrian village of Gnadenwald, Austria on July 18, 2017. (Photo by Dominic Ebenbichler/Reuters)

Vietnam’s Son Doong cave, the largest in the world, could hold a 40-story skyscraper inside. The pristine ecosystem has its own river and jungle. Despite its size, Son Doong wasn’t discovered until 1991. It was lost again for nearly two decades and was fully explored for the first time in 2009. (Photo by Jason Speth/HuffPost)

A female Chinese People's Liberation Army soldier looks at members of an honor guard preparing for a welcome ceremony for visiting German President Joachim Gauck, outside the Great Hall of the People in Beijing, Monday, March 21, 2016. (Photo by Andy Wong/AP Photo)

Artist Pyotr Pavlensky sits on the wall enclosing the Serbsky State Scientific Center for Social and Forensic Psychiatry after he cut off a part of his earlobe during his protest action titled “Segregation” in Moscow October 19, 2014. Pavlensky protested against the usage of forensic psychiatry for politically motivated purposes. He cut off his earlobe to demonstrate how authorities could “cut off” an unwanted individual from society by using psychiatric and medical diagnosis to forcefully send a person to a penitentiary hospital, according to Pavlensky. (Photo by Maxim Zmeyev/Reuters)

An army cadet contestant with his kart trailing smoke hits the ramp hard and crashes during the 70 year anniversary soap box derby on April 02, 2023 in Hunstanton, England. Over 40 home built karts raced through the streets of the Norfolk town, around bends and over jumps. The race was first held in1953. (Photo by Martin Pope/Getty Images)

A girl competes during a Hobby horsing competition in St. Petersburg, Russia, on Sunday, April 21, 2024. Several dozen kids, 48 girls and one boy, from first-graders to teenagers gathered in a gymnasium in northern St. Petersburg, Russia's second largest city, for a hobby horsing competition. (Photo by Dmitri Lovetsky/AP Photo)

Revelers slong Bourbon Street on Mardi Gras day in New Orleans, Louisiana on March 4, 2025. Several parades were canceled or sheduled early due to high winds and security was tightened in the wake of the January car attack in the French Quarter. (Photo by Sandy Huffaker/AFP Photo)

A dancer plays with fire during Lunar New Year of the Dragon celebrations at Binondo, the Chinatown of Manila, Philippines, on February 10, 2024. (Photo by Eloisa Lopez/Reuters)