Quote:Maybe i'm doing something wrong?

Yes, you don't read instructions.

5.1. New buliding details

Now every town can have a new building that is used as a general 'upgrade guild'. Thanks to this the player will be able to upgrade 3 creatures in the town to their new forms. Each town type has a different builiding, a different description, a different animation and a different cost. To try to build the new building RIGHT-click on your Town Hall (or Village Hall, City Hall, or Capitol). You have always olny one prerequisite to build - you must have a Castle. And of course, you have to have the right resources:

for the Heavenly Tower (Castle) you need: 22000 gold, 30 gems and 30 ore
for the Order of The Sun (Rampart) you need: 20000 gold, 25 crystal and 40 wood
for the Cloud Castle (Tower) you need: 25000 gold, 30 gems and 15 mercury
for the Kreegans' Gate (Inferno) you need: 19000 gold, 30 mercury and 15 sulfur
for the Hall of The Pit (Necropolis) you need: 21000 gold, 25 mercury and 35 wood
for the Underworld Entrance (Dungeon) you need: 23000 gold, 30 sulfur and 35 ore
for the Barbarian Citadel (Stronghold) you need: 19000 gold, 60 ore and 15 crystal
for the Temple of The Snake (Fortress) you need: 18000 gold, 50 wood and 20 sulfur
for the Escaton's Crystal (Conflux) you need: 20000 gold, 30 crystal and 15 gems

Note that when they say "new buildings", it is a metaphor. You won't see any.