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)

The sun sets over the Mediterranean sea as a nine-branched Hanukkah menorah (Hanukkiah) is pictured by the coast in Netanya on December 31, 2024. (Photo by Jack Guez/AFP Photo)

American actress, model, singer and activist Paris Jackson attends Comic-Con in San Diego, California, USA on July 21, 2018. (Photo by @parisjackson/Instagram)

A model displays henna tattoo designs on her hands during a Henna tattoo competition in Banda Aceh, Indonesia, 07 November 2023. (Photo by Hotli Simanjuntak/EPA/EFE)

Personal trainer, Denise Austin, and Katie Austin arrive at the ESPY Awards at the Microsoft Theater on Wednesday, July 13, 2016, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)

American model Isabella Khair Hadid is seen on March 13, 2018 in Los Angeles, California. (Photo by The Mega Agency)

One of only three active female blimp pilots in the world, Kristen Arambula guides her passengers towards the Goodyear blimp “Spirit of America” in Carson, California August 5, 2015. Christened in 2002, the air ship is being retired after 8,000 flights and replaced with a newer more modern version named the “Spirit of Innovation” in September. (Photo by Mike Blake/Reuters)

A young woman employee of North American Aviation Incorporated, working over the landing gear mechanism of a P-51 fighter plane, Inglewood, California, 1942. (Photo by Alfred T. Palmer/Buyenlarge/Getty Images)