Each level gives access to a bonus for cavalry troops. Ex: lvl 4 arena gives access to the lvl 4 upgrade bonus for atack or defense. Each level of the bonus gives 1-2% extra atac or defense for the troops made in that city, depending on the civilization.

Levels: 20

Requirements: Stables lvl 1


  • Wood: 380
  • Iron: 310
  • Stone: 450
  • Gold: 140