
1) Ancient Greek architect 2) Impact crater on Mercury
Found on
https://www.crosswordclues.com/clue/callicrates

Callicrates (Καλλικράτης, Kallikratēs) was an ancient Greek architect active in the middle of the fifth century B.C. He and Ictinus were architects of the Parthenon (Plutarch, Pericles, 13). An inscription identifies him as the architect of `the Temple of Nike` in the Sanctuary of Athena Nike on the Acropolis (IG I3 35). The temple i.....
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http://en.wikipedia.org/wiki/Callicrates
[crater] Callicrates is a crater on Mercury. It has a diameter of 70 kilometers. Its name was adopted by the International Astronomical Union in 1976. Callicrates is named for the Greek architect Callicrates, who lived in the 400s BCE. ...
Found on
http://en.wikipedia.org/wiki/Callicrates_(crater)

Athenian architect who designed the Temple of Athena Nike on the Athenian Acropolis and, with Ictinus, the Parthenon.[3 related articles]
Found on
http://www.britannica.com/eb/a-z/c/8

(lived 5th century BC) Athenian architect. With Ictinus, he designed the
Parthenon 447-438 on the Acropolis. ...
Found on
http://www.encyclo.co.uk/local/20688
No exact match found.