Easy to build and level, it gives you the opportunity to find relics along the way in GE each week. If you’re avid in GE beyond the minimum requirement set forth by the guild, this is a great addition to your town. So when you’re ready to level beyond 10, CDM is the prime target for extra FPs. That boost can make a huge difference! In addition, COA will give you a lot of coins, and CDM produces FPs. Having all three at level 10 grants you 30% attack and defense bonus each while attacking, for a total of 90%.

Ideally, you want to get them to level 10 as soon as possible for maximum fighting benefit without needing extra BPs yet. Generally speaking, if you like to get through GE via fighting, attack your neighborhood, or fight to win sectors in GvG you need this combination of buildings. These are otherwise known as the “fighting trifecta”. Statue of Zeus (Zeus), Cathedral of Aachen (COA), & Castle del Monte (CDM).This is definitely just the basics though, if you want something more in-depth, please check the comprehensive guide to GBs instead. Still, there are some GBs that can be said to be staples for certain play styles, as outlined here. Other players can give you some insight into why they did or did not build certain GBs to help you decide, but in the end it comes down to what you think will best benefit your game. Ultimately, the GBs you choose to build will be determined by your individual play style.

Castel forge of empires wiki