Yeah, but we can similar building to this, with huts. And others. If play AOE or W3 you can see the advances of thst buildings, train mercenaries, investigate technologies, get bonus for the owner. It's a strategical building because it's a object in middle of game that you can control. And give little plus to your civ. May be can give the advantage to win the game, I'm thinking in put a single one in a map. To control special units or cheaper mercenaries give to you extra pop cap for this special units.If you are fighting in Bactra Skirmish map you can access to some esperan and Bactrian mercenaries. Your civ have a pop capacity of 300 units more +15 if you train Cavalryman in that building you can get 6 extra units. If you train a Mauryan mercenary Elephant you can get 5 units. If you train infantry you can get extra 15 units. All these units can be Rebels, Pirates, faction rebels ( regular soldiers like Mauryan spearman, Thracian black coated, spy, assassins, Greek or Roman Siege machines, Pirate chips, Gladiators and whole units that you Civ may be can Access. Can be Royal Stoa. The units and tech you can have access can be depends of the map and cultural theme. Can be Italian mercenary camp. Celtic mercenary camp, Thracian, Mauryan, Northafrican, middle Estern, etc. in Warcraft there are 30 differents mercenary camp. And Mercenary camps it's only one of many of these buildings. There in the spolier I put the creator description of Mercenary camp. But this mercenary can not be Citizen Soldiers only soldiers. Several time ago I was one of the guys that talk the idea of mini factions but this is a complement. But I don't want this idea can be only a good idea how give extra mercenary and eyecandy units. #############################. Other neutral building that you can investigate units or train mercenary in w3 is: Fountain of Heath Can be a Fountaine in middle of a map that heal nearby units if aren't fighting. W3: The other Building here is the Marketplace can be a building around a Silk Road, map where you can trade and gives better barter than you own market. In W3 is for hero items, not useful,for us.(yet). All can be history acurates. Wells in map desert can be useful for a battle desert, think in the defeat of Crassus against the Parthian in Arid map. The fountains are good to preserve our units. Mercenary like Auxiliar Roman it's accurate, like a Rebel Army of Spartacus, or Cilicians Pirates, or Mercenary Thracians/Dacian/Numidian/Mauryan elephants, etc.