Career
Metaxas is best known for being the architect chosen by George Averoff to restore the Panathinaiko Stadium for the 1896 Summer Olympics in Athens, the birth of the modern Olympic movement, while the design was from Ernst Ziller. He also competed at those Games, entering the military and free rifle events. He placed fourth in both competitions, with scores of 1,701 in the military rifle event and 1,102 in the free rifle contest.
In 1912 he finished fourth in the trap competition and 35th in the 25 metre rapid fire pistol event.
He also designed the expansion of the east wing of the National Archaeological Museum of Athens.