Tower (Dwarf)/1.03

Dwarf
Dwarven towers are among the best in the game, possessing very high damage, great durability and a "balanced" cost, even if it is a little on the high side. However, that's just the tower with its default stats - the Dwarven race can build on to that with extra hit points, faster build times (and a fast builder to boot!), cheaper repair costs and garrisoned archers that offer double the damage an archer would normally offer. All this together makes Dwarven towers a real nightmare to face and allows the Dwarves to build themselves an incredibly potent bulwark that ensures their base wont be easily sieged late game.

The only downside is that the Dwarven race is forever hungry for gold, and spending 300 for a tower will most certainly hamper their economy in some way. There is also the high construction time, but this mostly only causes problems for non-Dwarven builders attempting to build one of these towers before the Engineering skill has been acquired. After which, or using a Dwarven Smith, will negate this otherwise-lengthy construction time.