Forge of Empires Cathedral of Aachen [Great Building Guide]

Welcome to our Forge of Empires Cathedral of Aachen Great Building Guide!

The Cathedral of Aachen is one of the oldest cathedrals in Europe, constructed by order of Emperor Charlemagne, who was buried there in 814.

Throughout 600 years in the Middle Ages, this was the place where the coronation of the German kings took place.

Forge of Empires Cathedral of Aachen

In Forge of Empires, it would be possible to play as a peaceful tradesperson, but most players will fight.

As a fighter this building is a must have.

The usual way to get the required 9 blueprints is to polish or motivate Early Middle Age buildings of other players.

Whenever you help such a building there is a 2% chance of getting an Early Middle Age blueprint.

Statistically seen, then every second blueprint is one of the Cathedral of Aachen.

You can also receive these blueprints as contribution rewards when donating to other players’ Cathedral of Aachen.

This great building has two important advantages:

  • Coin Production: Produces Coins every 24 hours
  • Military Boost: Attack Bonus for the attacking army

To enable the attack bonus and the coin production, this great building must be connected by a street to the city hall.

As for all great buildings a single lane is sufficient. With its 4×6 size, it will be a dominant place in a Middle Ages city.

To place the construction site of this building, Early Middle Age goods are needed.

Then the construction site can be completed into a great building by adding 50 forge points.

Being in a guild you usually will find 2 guild members to contribute 10 forge points each, so you only need to add the remaining 30 forge points to finish the construction.

You will want to level this building up to level 10 as soon as possible.

Only forge points from either yourself or from other players are needed to do that.

Above level 10 upgrades are much harder as they require another full set of 9 blueprints per level and many more forge points.

Also, the additional benefit of each new level is less than before.

Coin Production: Produces Coins Every 24 Hours

Cities in the Middle Ages benefit from this coin production.

On level 1 the Cathedral produces 2,610 coins every day which rises to 18.950 on level 10.

Military Boost: Attack Bonus For The Attacking Army

Each of the first 10 levels adds a 3% attack bonus for the attacking army.

This is exactly the same bonus that we already know from the Statue of Zeus.

The bonus helps in battles on the province map, in guild expeditions, guild battlegrounds, when attacking neighbors, and in PVP tournaments.

Above level 10 each additional level only provides 0.5% additional attack bonus.

As the game displays bonuses rounded up to the next integer, it looks as if only every second level would add 1%.

Late game scenarios often let players upgrade the Cathedral of Aachen to level 80 resulting in a 65% attack bonus.


On Level 1 The coin production is comparable with the daily collection of 5 Early Middle Age buildings.

While it is a real advantage in lower ages, it is nearly nothing compared to daily coin collections in advanced ages.

So this effect only helps those who build it very early, but nobody builds the Cathedral of Aachen because of this first bonus.

The second bonus is the desired one
Building the Cathedral of Aachen is highly recommended for every player who fights at least occasionally.

It makes the attacking army stronger, and this is what new players urgently need.

The goal is to upgrade this great building to level 10 as soon as possible.

Upgrades above level 10 are something for late-game scenarios, not for beginners.

Players usually stop upgrading the Cathedral of Aachen at level 10 and construct the Castel del Monte afterward.

Beginners usually build the Statue of Zeus first as it provides the same attack bonus with lower requirements.

Having the Statue of Zeus and the Cathedral of Aachen both on level 10 provides a combined attack bonus for the attacking army of 60%, allowing players up to the Late Middle Ages to complete level 4 of the Guild expedition.

The Cathedral of Aachen will be very helpful in all battles from the beginning of the game up to late-game scenarios. It is a must-have.

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