An Insider’s Guide to Sounio   Discover Sounio, Greece: visit the Temple of Poseidon, relax on stunning beaches, and enjoy fresh seafood. Your perfect Attica day trip awaits!

Mark Zuckerberg, ranked as the world's second richest billionaire by Forbes, enjoyed a summer holiday in mid-June with his family in the seaside town of Alepochori, Greece, aboard his US$300-million ...