This photo taken on October 20, 2018 shows tourists posing for a photo on a middle of a railway track passing through an old residential district in central Hanoi. (Photo by Nhac Nguyen/AFP Photo)

A diving competitor during a practice session at Tokyo Aquatics Centre ahead of the Tokyo 2020 Olympic Games in Japan on Wednesday, July 21, 2021. (Photo by Stefan Wermuth/Reuters)

A woman watches a Mariachi band play aboard a float during the Day of the Dead River parade on October 29, 2021 in San Antonio, Texas. People gathered in San Antonio to celebrate, commemorate, and remember departed loved ones for this year's Día de los Muertos. This year's celebration is newly returned after in-person gatherings and festivities were canceled last year due to COVID-19. (Photo by Brandon Bell/Getty Images)

Alex Lual (R) in action against Trent Girdham (L) during the undercard bouts ahead of the WBO Asia Pacific Super Welterweight Title Bout between Tim Tszyu and Takeshi Inoue at Qudos Bank Arena, in Sydney, New South Wales, Australia, 17 November 2021. (Photo by Dan Himbrechts/EPA/EFE)

Semi-feral, conservation ponies, graze on the salt marsh's of Gower, Swansea, Wales, United Kingdom on September 7, 2022. (Photo by Joann Randles/Cover Images)

Speed Team’s Joan Font and co-driver Themis Lopez attempt to retrieve their vehicle after it was stuck in water during stage 9 of Dakar Rally in Saudi Arabia on January 10, 2023. (Photo by Hamad I Mohammed/Reuters)

Who Left The Tap Running by artist Simon McGrath is seen as part of the Sculpture by the Sea outdoor exhibition along the Bondi to Bronte coastal walk on November 4, 2011 in Sydney, Australia. (Photo by Lisa Maree Williams/Getty Images)

The 26th annual National Geographic Traveler Photo Contest is now accepting submissions. Official categories include: “Travel Portraits”, “Outdoor Scenes”, “Sense of Place” and “Spontaneous Moments”. The contest is accepting entries until June 30. Photo: “Forest lights”. Aurora Borealis over the forest of the Pyhae Luosto National Park, Finland. (Photo and caption by Nicholas Roemmelt/National Geographic Traveler Photo Contest)