The English word gymnasium shrank over the centuries; the Greek original was closer to a university with a sports campus. Ephesus, typically, kept four — the Vedius, the East, the Theatre and the Harbour gymnasiums — spread through the city like anchors of civic life.
A gymnasium combined a palaestra (colonnaded training court) for wrestling, boxing and exercise; halls and exedras where teachers lectured on rhetoric, philosophy and music; and full bath suites, because Greek and Roman exercise ended in hot water by definition. Boys passed through as students, young men as ephebes in civic training, and grown citizens simply lived there between obligations.
The Vedius and the Harbour
The Vedius Gymnasium, given to the city around AD 150 by the same Vedius Antoninus family that funded the Odeon, is the best preserved — its marble halls honoured both the emperor and Artemis, hedging every important bet. The Harbour Gymnasium, by the ancient port, sprawled across the largest footprint in Ephesus, its running tracks and courts the first great civic complex a sea traveller met after the Arcadian Street. Arrive, bathe, exercise, argue philosophy: the welcome package of a Greek metropolis.
The complexes stand at the edges of the usual route, viewed in passing or from perimeter paths depending on current excavation — but knowing what they were changes the skyline: those brick masses were not warehouses. They were the machine that turned Ephesian children into Ephesian citizens.

