Philopappou, Ancient hill and monument complex in central Athens, Greece

Philopappou is a hill in central Athens that rises about 147 meters and holds a white marble monument dedicated to Gaius Julius Antiochus Epiphanes Philopappos. The site features pathways and viewing points spread across its slopes, connecting the memorial with the surrounding neighborhood.

The marble monument crowning the hill was erected by the Athenians between 114 and 119 AD in honour of Gaius Julius Antiochus Epiphanes Philopappos, a prince of the Kingdom of Commagene and a Roman consul who lived in Athens as a benefactor. His nickname "Philopappos" means "grandfather-loving", because he was devoted to his grandfather. The hill was earlier called Seggio, a name from the Frankish period kept until the early 20th century.

The pathways across this hill were designed by architect Dimitris Pikionis, who blended local stone patterns with connections to Greek building traditions. These carefully laid routes show how modern design can respect the natural surroundings.

The hill is reachable from Thissio and Acropolis metro stations and can be explored freely at any time without entry fees. The paths are rocky, so sturdy footwear and water are recommended, especially on warmer days.

The hill's older name, Seggio, comes from the Italian word segno, meaning signal. During the Frankish occupation a signalling station on the southern tip of the summit is thought to have relayed messages about fleets or pirate ships to observation towers along the Saronic coasts and islands.