The famous Tholos of the sanctuary of Athena Pronaia at Delphi. It was constructed sometime in the fourth century B.C., and has a circular plan with originally twenty outer Doric columns and ten Corinthian columns on the inner circle. The purpose of the building is not exactly clear.
The following is Alicia Hernandez's (Brown University) commentary on the building: "The tholos is a late classical circular building, it is located on the terrace and was built between 380-360 B.C.E. It is suggested that Theodorus of Phocaea designed the tholos. The marble used to build it came from Attica. The exterior was built in the Doric order and contains twenty columns. The number of the Corinthian half columns located in the interior is unknown, though some suggest ten. Within the tholos there are delicate moldings and carvings both in bas-relief and round form. There are two large friezes, one located on the exterior and the other located around the top of the cella wall, each frieze contains forty metopes. The exterior frieze depicts the battle between the Amazons and the centaurs."
Hernandez, Alicia. "Sanctuary of Athena Pronoia" Archaeologies of the Greek Past, https://www.brown.edu/Departments/Joukowsky_Institute/courses/greekpast/4715.html#:~:text=It%20is%20suggested%20that%20Theodorus,unknown%2C%20though%20some%20suggest%20ten .
Photograph created August 9th, 1958. Processing date unknown. Formerly catalogued as B22.056. Notes written on the slide or index: Delphi - Tholos.
