URBEX: Enter at your own risk

In Moscow, Russia, 25-year-old Oleg scouts out an epic climb up the Zhivopisny Bridge, while in Melbourne, Australia, former video game publisher and notorious crane climber Bryce identifies Coop's Shot Tower as his next high-risk target.

In Kuala Lumpur, Malaysia, a skywalker scales a tall bridge, while in Mumbai, India, a pair of Russian urban explorers seek rooftop video opportunities atop one of the world's most rapidly developing skylines.

In Moscow, Russia, Oleg and his friend Igor challenge Moscow’s elite by scaling the city's abandoned factories and skyscraperers. Meanwhile, former model Elaina explores the underbelly of Copenhagen, Denmark, with experienced urban explorer Anders.

With every urbex video posted online comes a wave of criticism. Explorer Bryce experienced this negativity after climbing Melbourne, Australia's Prima Pearl building. In Toronto, Canada, Max and Zack arrive to a city clamping down on rooftopping.

Some cities are so risky to infiltrate that only a brave few ever attempt them. Frenchman David tries his hand at exploring a legendary space centre in Kazakhstan. In Dubai, Oleg and Abudi have their eyes on the world’s most alluring skyline.

With millions of people exploring their local cities and millions more watching online, this has been called the golden age of urbex. But the exposure has also led to an increase in security in cities around the world.