Sunset on the Riyadh Sky Bridge — and it’s like nowhere I’ve ever been before. Its 65-metre span doesn’t arch over a river or a railway. Instead, below us, there is a thousand feet of desert air. The bridge is inside the top floor of the Kingdom Tower, the dominant landmark in Riyadh, the capital of Saudi Arabia. Imagine a glossy, metallic-blue skyscraper with a huge V-shaped chunk taken out ...