A cosplayer uses moving stairs during the first public day of the world's largest computer games fair Gamescom in Cologne, Germany August 23, 2017. (Photo by Wolfgang Rattay/Reuters)

Australian jouster Kimberly Belcher poses for a portrait in her armour on the sidelines of the jousting tournament at the St Ives Medieval Fair in Sydney, one of the largest of its kind in Australia, September 22, 2016. (Photo by Jason Reed/Reuters)

Patience paid off for the photographer who waited for hours to catch a crocodile on Java, the largest Indonesian island in March 2023. (Photo by Tanto Yensen/Solent News)

A ballet student from the Kibera based Project Elimu poses ahead of a public show in Kibera on August 14, 2024. Project Elimu, a community driven non profit organization, provides afterschool art, sport education programs for young people age 3 to 22. During school holidays the center holds street perfomances to encourage more students to join the dance center. Kibera is the largest slum in Nairobi, one of the largest in Africa. (Photo by Gordwin Odhiambo/AFP Photo)

Villagers from the Porto Novo community load into their canoes arapaima or pirarucu, the largest freshwater fish species in South America and one of the largest in the world, while fishing in Poco Fundo lake along a branch of the Solimoes river, one of the main tributaries of the Amazon, in the Mamiraua nature reserve near Fonte Boa about 600 km (373 miles) west of Manaus, November 26, 2013. Catching the arapaima, a fish that is sought after for its meat and is considered by biologists to be a living fossil, is only allowed once a year by Brazil's environmental protection agency. The minimum size allowed for a fisherman to keep an arapaima is 1.5 meters (4.9 feet). (Photo by Bruno Kelly/Reuters)

Assamese dancers in traditional attire perform as they attempt Guinness World Record in the largest folk dance performance category in Guwahati, India, Friday, April 14, 2023. Around 11,000 Bihu dancers and musicians performed together to set a new record for Guinness World Record in the largest folk dance performance category today. (Photo by Anupam Nath/AP Photo)

A woman runs through the early morning mist on Hampstead Heath on September 30, 2011 in London, England. Much of the UK is enjoying a spell of unseasonably hot weather which is expected to last into next week. (Photo by Dan Kitwood/Getty Images)

American artists have drawn criticism after making stunning, intricate sculptures by pouring hot liquid aluminium into anthills.