That curiosity atop Philopappos Hill turned out to be the marbleÂ mausoleumÂ of Philopappos, a prince of the ancient Hellenistic Kingdom of Commegane in upper Syria, whichÂ was later annexed by the Roman Empire, and senator under Emperor Trajan. Dating to 116 AD, the tomb, opposite the Acropolis and within the formal boundaries of the city, shows the high position Philopappos had within Athenian society. (Indeed, for the six centuries prior to its building, the area was known asÂ Mouseion Hill, or the Hill of the Muses.) Today, it makes for a relatively solitary uphill stroll to see the two-story monument and take in the unobstructed view of the Acropolis within the context of modern-day Athens. Or, if you’re a GreekÂ teenager, the ideal spot to roll a joint in relative seclusion. As always, click on the panoramic imageÂ then click it again for greater detail.