An astonishing set of snaps of a thrill-seeker's sky-high catwalk show on the edge of some of the world's tallest buildings has turned her into a social media sensation. Daredevil Angelina Nikolau, 23, from Russia, has spent weeks travelling around China and Hong Kong posing for jaw-dropping skyscraper selfies hundreds of feet above the ground. Her vertigo inducing results – uploaded to Instagram – have made her an instant star on the internet. (Photo by Kirill Oreshkin/CEN)

These photographs are the work of urban explorer Dr Bradley Garrett who made headlines back in 2012 when he posted a series of snaps from the top of The Shard skyscraper while it was still under construction. Garrett, now a researcher at the University of Oxford, took these shots during his time with the London Consolidation Crew (LCC), a loose collection of urban explorers based in the English capital. Photo: Bradley Garrett stands on the edge of the Ritz-Carlton Chicago as lightning strikes in the distance in Chicago, US. (Photo by Bradley L. Garrett/Barcroft Media)

Karim Nafatni is an Airline Captain and photography enthusiast. He seriously got into the Art when he got his first DSLR 3 years ago. Addicted to height and fan of architecture,he climbs the highest skyscrapers of Dubai to take his pictures ,sometimes more than 300 meters above ground. As the top of the biggest buildings in the world is not high enough for him,he carries his camera with him during work to document his daily routine in"his Office" and shoots from his flight deck.

The under-construction Shard building on December 5, 2011 in London, England. The 80 storey skyscraper will be Europe's tallest mixed-use building when it is completed in May 2012; it will contain offices, restaurants, residential apartments as well as a five star hotel. (Photo by Dan Kitwood/Getty Images)

Roof-topping enthusiast Daniel Lau takes a selfie with high-rise buildings down below as he stands on the top of a skyscraper in Hong Kong, China on August 15, 2017. A craze that began in Russia has now taken hold in Hong Kong, one of the world's most vertical cities. Mr Lau said he had been inspired by Russian climbers and that he was unafraid of the vertiginous heights he scales. (Photo by ImagineChina/Rex Features/Shutterstock)

From the 1940s through the 1960s, the Alfred Mainzer Company of Long Island City, NY published a series of linen and photochrome humorous cat postcards illustrated by Eugen Hartung (or Hurtong) (1897–1973), sometimes referred to as “Mainzer Cats”. These postcards normally illustrate settings that are filled with action, often with a minor disaster just about to occur. While the dressed cats were by far the most popular and most plentiful cards, Hartung also painted other dressed animals – primarily mice, dogs, and hedgehogs.

Photographer Khalid Alhammadi really has got his head in the clouds as he scales some of the Middle East’s tallest buildings to photograph iconic landmarks high above the rising mist. Khalid’s breathtaking shots over Abu Dhabi look almost otherworldly, with skyscraper tips and mosque towers poking through the eerie fog. Here: Night view of Abu Dhabi. (Photo by Khalid Alhammadi/Caters News Agency)