Its capacity is 5,500 seats, making it the twelfth largest stadium in the Football League for the 2014–15 season.

The stadium was rebuilt in 2004 and 2008, and blue plastic seats were added to all the stands.

The record of attendance at the Lamia Municipal Stadium took place on March 31, 1968, in a match between Lamia and Trikala, with 11,502 fans staying at the stadium stage.

In the summer of 2017 the stadium was renovated to license PAS Lamia 1964 in the Super League.

In September 2020 the Municipal of Lamia changed the name of the stadium to Athanasios Diakos,[1] who was a Greek military commander during the Greek War of Independence, considered a venerable national hero in Greece.