Medieval Towns/Markets and Town Fairs – ZUM-Unterrichten https://unterrichten.zum.de/wiki/Medieval_Towns/Markets_and_Town_Fairs
Most towns had daily markets where you could buy food and products from the surrounding villages. Street names like Market Square, Beast Market or Hay Market still show what was going on hundreds of years ago.
The history of the fair goes back to the Roman Empire when fairs were mostly held
