If you want to capture the best selfie while travelling to Athens, Greece this summer, then look no further. This rocky outcrop has been at the heart of human civilisation as far back as the 4th millennium BC. The most iconic structure on the peak, the Parthenon, was completed in 438 BC as a symbol of the Athenian Empire’s power and victory over Persian invaders. Today it’s considered to be one of the most important surviving buildings of Classical Greece and one of the world’s greatest cultural monuments.