[Agora Webpage] AgoraPicBk 16 2003: Altar of the Twelve Gods

http://agathe.gr/guide/altar_of_the_twelve_gods.html

Altar of the Twelve Gods Near the middle of the open square, somewhat to the north, lay the Altar of the Twelve Gods (Fig. 7), today largely hidden under the Athens–Piraeus railway (1891). A corner of ... "Amongst those of the Peisistratids who held the annual magistracy at Athens was Peisistratos, son of Hippias the tyrant (named after his grandfather), who during his archonship set up the Altar of the Twelve Gods in the Agora and the Altar of Apollo in the shrine of Apollo Pythios.

[Agora Webpage] Birth of Democracy: Tyranny

http://agathe.gr/democracy/tyranny.html

Tyranny As happened in many other Greek states, a tyrant arose in Athens in the 6th century B.C. His name was Peisistratos, and after several unsuccessful attempts he seized power in 546 B.C. and ruled ... Large temples and altars were constructed for Zeus Olympios, Apollo Pythios, and the Twelve Gods. ... (Athenian Constitution 18.1) Drawing of an inscribed molding from the Altar of Apollo Pytbios. Drawing by William B. ... Literary sources tell us that the Altar of Apollo Pythios, like the Altar of the Twelve Gods, was built when Peisistratos the Younger was archon, in 522/1 B.C.