BuildingsVillage HallIncreases your total amount of money with 500 gold per day.
Cost: Starting Building.
Requirements: No.
Between two huge sand dunes, there is a hall. The village hall looks a little bit as the castle one, but more persian.
Town HallIncreases your total amount of money with 1000 gold per day.
Cost: 2500 gold
Requirements: Village Hall, Tavern
The Village hall has now two towers on the sand dunes and it's larger.
City HallIncreases your total amount of money with 2000 gold per day.
Cost: 5000 gold
Requirements: Town Hall, Marketplace, Mage Guild level 1, Blacksmith
The Town Hall is merged with the two towers and Ganesh is on a painting (the indian god with the elephant head) on the wall outside. Also, it's taller
CapitolIncreases your total amount of money with 4000 gold per day.
Cost: 10000 gold
Requirements: City Hall, Castle
Changed color of the City Hall and it's taller with 4 famous indian gods on a painting on the wall.
FortThe town recieves a giant wall during sieges to prevent enemies for capturing the town.
Cost: 5000 gold, 20 wood and 20 ore
Requirements: No.
Looks like a giant grey box, with doors.
CitadelThe City's wall is harder to destroy, increases weekly growth on all creatures with 50%, creates a moat and a tower with a Night Watch who shoots the enemies during a siege.
Cost: 2500 gold and 5 ore
Requirements: Fort.
The Grey Box has now a large tower and a moat
CastleAdds an additional 2 shooting towers during a siege and increases weekly creature growth with 100%.
Cost: 5000 gold, 10 wood and 10 ore
Requirements: Citadel.
Two additional towers, the grey box is also bigger, and two patrols walks around the castleoutside of the moat
TavernYou could hire heroes in the tavern. Also, you could look in the Thieves Guild.
Cost: 500 gold and 5 Wood
Requirements: No.
A dark cottage.
MarketplaceYou could exchange one resource to another here.
Cost: 500 gold and 5 wood
Requirements: Village Hall
A market place... looks kinda like the castle one
Resource SiloHere you will get +1 sulfur per day.
Cost: 5000 gold and 5 ore
Requirements: Marketplace
The Marketplace is now wider
Hidden StorageHere you will get +1 sulfur per day.
Cost: 2500 gold, 5 wood, 5 stone and 5 sulfur
Requirements: Resource Silo, Cliff Top
A hidden cave on the cliff (who is near the marketplace and where you could recruit these birds)
Mage Guild level 1-4You will learn spells through the Mage Guild.
Cost: 2500 gold, 5 sulfur
Requirements: Village Hall
A house who is not taller - it's larger and such !
BlacksmithHere you could buy a First aid tent.
Cost: 1000 gold, 5 ore
Requirements: Village Hall
looks like a dark version of the tower one, without snow, and it's near the rakshasa hideout.
Empire HallIncreases your gold income with 5000 gold per day and increases the creature growth in all your towns with 15%.
Cost: 10000 gold, 10 wood and 10 ore
Requirements: Capitol, Castle
Tempest TowerUpgrades the Night Watches in the towers during a siege. They are now Snipers and their damage is increased with 25%. Also, growth of all creatures increases by 5%.
Cost: 6000 gold, 15 ore
Requirements: Citadel, Archery Range
Desert UniversityHere you could learn the following secondary skills: Archery, Mysticism, First Aid and Artillery.
Cost: 5000 gold
Requirements: City Hall
DwellingsDigger HoleHere you could recruit Desert Diggers.
Cost: 500 gold, 1 sulfur and 2 ore.
Requirements: Fort
Digger LairAn upgrade of the Digger Hole. Here you could recruit Brutal Diggers.
Cost: 2000 gold
Requirements: Digger Hole, Fort
Large CampfireHere you could recruit Night Watch.
Cost: 1000 gold, 5 wood and 5 ore
Requirements: Tavern, Digger Hole
Watcher's QuarterAn upgrade of the Large Campfire. Here you could recruit Snipers.
Cost: 2000 gold, 5 sulfur
Requirements: Large Campfire, Citadel
Cliff TopHere you could recruit Bronze Beaks.
Cost: 2500 gold, 5 mercury
Requirements: Large Campfire, Town Hall
Golden PeakAn upgrade of the Cliff Top. Here you could recruit Golden Beaks.
Cost: 7000 gold
Requirements: Cliff Top
Rakshasa Denhere you could recruit Rakshasas.
Cost: 4000 gold, 2 crystal, 2 mercury, 2 sulfur and 2 gems
Requirements: Large Campfire
Rakshasa HideoutAn upgrade of the Rakshasa Den. Here you could recruit Rakshasa قاتلة.
Cost: 3000 gold, 15 wood
Requirements: Rakshasa Den, Blacksmith
Magical CaveHere you could recruit Acolytes.
Cost: 6000 gold, 10 ore and 5 gems
Requirements: Large Campfire, Mage Guild Level 1
Chamber of SorceryAn upgrade of the Magical Cave. Here you could recruit Seers.
Cost: 4000 gold, 5 crystal, 5 mercury, 5 sulfur and 5 gems
Requirements: Magical Cave, Mage Guild Level 2
Reptile StablesHere you could recruit Sand Runners.
Cost: 6000 gold, 20 wood and 5 sulfur
Requirements: Cliff Top
Avenger LodgeAn upgrade of the Reptile Stables. Here you could recruit Desert Avengers.
Cost: 8000 gold, 10 wood and 10 sulfur
Requirements: Reptile Stables, Castle
Scorcid DenHere you could recruit Scorcids
Cost: 10000 gold, 40 ore and 20 sulfur
Requirements: Magical Cave, Reptile Stables
Scorcid TempleAn upgrade of the Scorcid Den. Here you could recruit Scorcid Overseers
Cost: 20000 gold, 20 wood, 20 ore and 10 crystal
Requirements: Scorcid Den, Avenger Lodge
something like that... it's in beta-beta-beta-beta-beta-beta-beta-beta-BETA mode

EDIT: updated with some designs ... doing the rest later