People take pictures of the sunset in Berlin October 27, 2014. (Photo by Hannibal Hanschke/Reuters)

A man dressed as a bear and wearing a protective face mask amid the outbreak of the coronavirus disease (COVID-19) stands in front of a fountain in central Kyiv, Ukraine on August 11, 2020. (Photo by Valentyn Ogirenko/Reuters)

Moichara or Bull race is a rural festival where a pair of bulls race each other during the monsoon season. This race is performed by a farmer in Parganas, India on July 4, 2021. (Photo by Sumit Sanyal/SOPA Images/Rex Features/Shutterstock)

A man walks around while praying in front of lotus lanterns attached to prayer petitions at Jogye temple in Seoul, South Korea, on May 8, 2024. (Photo by Kim Hong-Ji/Reuters)

The opening of sculptor Carole Feuerman solo outdoor public art show, Sea Idylls, on Park Avenue in NYC on April 27, 2023. The hyperrealistic sculptures in conjunction with Les Galeries Bartoux and Patrons of Park Avenue line the median. (Photo by Milo Hess/ZUMA Press Wire/Rex Features/Shutterstock)

The Christmas tree is lit at Rockefeller Center in the Manhattan borough of New York City, New York, U.S., November 30, 2022. (Photo by Jeenah Moon/Reuters)

Argentine-Spanish singer Nathy Peluso brings her Club Grasa set to life at the Boiler Room x PATRÓN Tequila debut event in Ibiza, Spain on August 14th, 2025. (Photo by Boiler Room)

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)