Željava Air Base, situated on the border between Croatia and Bosnia and Herzegovina under Plješevica Mountain, near the city of Bihać, Bosnia, was the largest underground airport and military air base in the former Yugoslavia, and one of the largest in Europe. (Photo by Thomas Windisch/Exclusivepix Media)

Icelandic horses play on a stud farm in Wehrheim Frankfurt, Germany, as the sun rises on Thursday, May 21, 2020. (Photo by Michael Probst/AP Photo)

Workers clean the premises of Pashupatinath temple in Kathmandu, Nepal, December 16, 2020. The Pashupatinath Temple in Nepal reopened for devotees on Wednesday morning, almost eight months after it was shut due to the COVID-19 pandemic. (Photo by Xinhua News Agency/Rex Features/Shutterstock)

Bollywood actor and animal rights activist Dia Mirza interacts with school children during the launch of 'Ellie', a life-size animatronic elephant part of a People for the Ethical Treatment of Animals (PETA) nonprofit organization campaign, in Mumbai on May 5, 2023. (Photo by Indranil Mukherjee/AFP Photo)

Belarusian women take a selfie as they take part in the Mrs and Miss Minsk city pageant, amid the coronavirus disease (COVID-19) outbreak in Minsk, Belarus on June 26, 2020. (Photo by Vasily Fedosenko/Reuters)

“Maeklong Railway Market, located in Samut Songkhram, Thailand, around 37 miles west of Bangkok, looks like any other open-air market in Asia. HOWEVER...”. – Kaushik via Amusing Planet. Photo: Maeklong Railway Market (Photo by Trent Strohm)

The last American military convoy to depart Iraq from the 3rd Brigade, 1st Cavalry Division crosses over the border into Kuwait on December 18, 2011 in Khabari Al Awazeem, Kuwait. (Photo by Mario Tama/Getty Images)

Visitors stand inside a church made entirely of snow and ice in southern Bavaria on January 14, 2012 in Mitterfirmiansreut, Germany. (Photo by Johannes Simon/Getty Images)