To an outsider, their passion is at times illegal and often on the verge of life and death. But climbing rooftops of high-rise buildings and exploring abandoned facilities is in the blood of these young Muscovites. The small group calls itself “Rudex”, which stands for “roof and decay exploration”, and is akin a Western youth craze known as urbex or “urban exploration” of man-made structures. Here: Urban explorer Vad Him of Rudex team jumps whilst on a rooftop in Moscow, Russia, August 14, 2017. (Photo by Maxim Shemetov/Reuters)

Mei Hoshizuki and AZM compete during the Women's Pro-Wrestling “Stardom” at Korakuen Hall on September 28, 2020 in Tokyo, Japan. (Photo by Etsuo Hara/Getty Images)

Belgium's Elise Mertens, left, and Aryna Sabalenka of Belarus celebrate with their trophy after defeating Barbora Krejcikova and Katerina Siniakova of the Czech Republic in the women's doubles final at the Australian Open tennis championship in Melbourne, Australia, Friday, February 19, 2021. (Photo by Hamish Blair/AP Photo)

English singer and songwriter Dua Lipa “woke up in Vegas” early April 2022 in red thigh-high tights. (Photo by dualipa/Instagram)

Participants run through coloured powder during the Colour Run race in Moscow, Russia on June 5, 2022. (Photo by Maxim Shemetov/Reuters)

American singer Ashley Nicolette Frangipane, known professionally as Halsey wears eye-catching makeup to celebrate AF 94 in the last decade of July 2022. (Photo by iamhalsey/Instagram)

British-Albanian singer Dua Lipa during the Milan Fashion Week Womenswear Fall/Winter 2023/2024 on February 23, 2023 in Milan, Italy. (Photo by dualipa/Instagram)

Brown-throated sloth called “43”, rescued by Juan Carlos Rodriguez and his wife Haydee in a residential area, waits in the kennel getting prepared for being released, at the couple's shelter for sloths, in San Antonio, Venezuela on July 30, 2021. (Photo by Leonardo Fernandez Viloria/Reuters)