Advancing armies have tried and failed on numerous occasions throughout history to breach its near-impregnable defences, so what chance does the average punter have, you may ask? Well, as it turns out, there are at least a dozen ways to gain free entry into Edinburgh Castle - and not one of them requires a siege engine or a battalion of angry musketmen..
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Hull's Peter Skipper (left) and David Rennie batlle it out in front of 13,551 at Elland Road.
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Action from the League Cup round two, second leg clash at Elland Road as Leeds tried to overcome a 2-3 first leg deficit.
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The Whites could not find a breakthrough.
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Ian Baird heads home against Pompey at Elland Road.