Cathedral of Aachen Forge of Empires 2026: Complete Guide to Boosting Your Attack & Happiness

Section	Topic
1	Introduction to the Cathedral of Aachen
2	How to Unlock the Cathedral of Aachen
3	Cathedral of Aachen Base Stats and Requirements
4	Special Ability: Attack Boost for Attacking Army
5	Production Bonus: Coins and Supplies
6	Optimal Placement and Road Connection
7	Upgrade Strategy: Level 1 to Level 10
8	Level 10 to 100: The Arc Synergy
9	Cathedral of Aachen vs Other Early Great Buildings
10	Frequent Mistakes to Avoid
11	Frequently Asked Questions (FAQs)
12	Final Verdict: Is It Worth Building?

1. Introduction to the Cathedral of Aachen

The Cathedral of Aachen is one of the most valuable Great Buildings in the Early Middle Ages of Forge of Empires. Named after the historic Palatine Chapel in Germany, this Great Building provides a dual benefit that every aggressive city builder needs: a percentage boost to your attacking army’s attack power and a steady production of coins every 24 hours. For players focusing on the Guild vs Guild (GvG) or PvE continent map battles, the Cathedral of Aachen is a non-negotiable early investment.

2. How to Unlock the Cathedral of Aachen

To unlock the Cathedral of Aachen, you must first research the Military Tactics technology in the Early Middle Ages era. This technology is located near the end of the Early Middle Ages tech tree. Once researched, you will receive the Blueprint for the Cathedral of Aachen as a potential reward from aiding other players, contributing to other Great Buildings, or completing quests. You need nine blueprints to build it. After collecting the required blueprints, you must place the building on a 5×4 grid (20 tiles) in your city.

3. Cathedral of Aachen Base Stats and Requirements

Base requirements for level 1 are as follows:

Size: 5 width x 4 height (20 squares)
Road Connection: Required (one side must touch a road)
Construction Cost: 100 Forge Points (FP) to complete the initial foundation
Age: Early Middle Ages
Production per 24 hours (Level 1): 2,900 coins
Attack Boost (Level 1): 10% boost to attacking army’s attack

As you increase levels, coin production and the attack percentage rise significantly.

4. Special Ability: Attack Boost for Attacking Army

The primary reason advanced players build the Cathedral of Aachen is its attacker’s attack boost. Unlike defensive boosts, this Great Building increases the offensive power of your units when you initiate a fight. At level 1, it gives a 10% boost. At level 10, it gives a 41% boost. This boost stacks with other attack-boosting Great Buildings such as the Statue of Zeus and Castel del Monte. For optimal military performance, players aim to level all three to level 10 or higher, creating a combined attack boost of over 100% before the Modern Era.

5. Production Bonus: Coins and Supplies

Beyond combat, the Cathedral of Aachen produces a daily coin payment. While coins may seem trivial in later ages, this production is crucial in the Early Middle Ages and High Middle Ages when coin costs for recruiting units and negotiating sectors are high. At level 10, the Cathedral of Aachen produces 47,900 coins per day. With a fully motivated building, this amount can double. However, note that the Cathedral of Aachen does not naturally produce supplies or goods, only coins in addition to the attack boost.

6. Optimal Placement and Road Connection

Placement strategy directly affects efficiency. The Cathedral of Aachen requires a road connection, but since it produces no forge points, you do not need to surround it with more than one road tile. To maximize city space:

Position the building in a corner or along the outer edge of your city.
Connect only one single tile of a road to its edge.
Surround it with other non-residential buildings that have no road requirement.
Never place it in the center of your city, as its 20-tile footprint will waste valuable road access for more critical buildings like houses or production buildings.

A recommended layout is the road-skipping technique: place the Cathedral next to smaller buildings that also require only one road tile, forming a cluster that shares a single road line.

7. Upgrade Strategy: Level 1 to Level 10

Leveling from 1 to 10 is the first major milestone. Use this prioritized strategy:

Level 1 to 5: Invest your own forge points. The cost per level is low. Focus on reaching level 5 quickly for a 25% attack boost.
Level 5 to 7: Join a guild that offers 1.9 or 1.85 threads. Let guild members take the top reward spots. This saves your forge points for other Great Buildings.
Level 7 to 10: Use contribution rewards from events and daily collections. Never use diamonds to speed up forge point investments.
Stop at Level 10 if you are a casual player. Level 10 gives 41% attack boost and 47,900 coins per day, which is sufficient for all battles through the Colonial Age.

8. Level 10 to 100: The Arc Synergy

For competitive players with a high level Arc (level 80 or above), taking the Cathedral of Aachen beyond level 10 becomes efficient. At level 58, the Cathedral provides a 75% attack boost. At level 80, it provides a 91% attack boost. At level 100, it offers a 101% attack boost. The coin production at level 100 exceeds 1.2 million coins per day. However, leveling beyond 60 is not recommended for new players due to the exponential forge point cost. Only players with a level 80 Arc and a consistent 1.9 contribution loop should pursue level 100.

9. Cathedral of Aachen vs Other Early Great Buildings

Many new players ask whether to build the Cathedral of Aachen, Statue of Zeus, or Castel del Monte first. Here is a direct comparison:

Statue of Zeus (Iron Age): Provides only attack boost (no coin production). Smaller footprint (3×3). Build this first.
Cathedral of Aachen (Early Middle Ages): Provides attack boost + coins. Larger footprint (5×4). Build this second.
Castel del Monte (High Middle Ages): Provides attack boost + forge points. Best for advanced players. Build this third.

The correct order is Zeus → Cathedral of Aachen → Castel del Monte. Do not skip the Cathedral of Aachen because the coins help pay for army recruitment in the Middle Ages.

10. Frequent Mistakes to Avoid

Avoid these common errors:

Mistake 1: Building the Cathedral before the Statue of Zeus. The Zeus gives a higher attack boost per forge point invested at lower levels.
Mistake 2: Placing the Cathedral without a road. This halves its production to only 50% unless motivated.
Mistake 3: Leveling the Cathedral beyond 10 before leveling your Arc to 80. The reverse order wastes forge points.
Mistake 4: Using diamonds to buy blueprints. Always trade blueprints with guild members instead.
Mistake 5: Deleting the Cathedral in later ages. Its percentage-based attack boost remains relevant even in Space Age Mars.

11. Frequently Asked Questions (FAQs)

Q1: Is the Cathedral of Aachen worth building in 2026?
Yes, absolutely. Any attack-based strategy requires this building. It remains one of the three essential military Great Buildings for all fighting players.

Q2: Does the Cathedral of Aachen boost defending army?
No. It only boosts the attacking army’s attack. It does not affect defending army attack or any army’s defense stat.

Q3: Can the Cathedral of Aachen be plundered?
Yes, if it is not motivated and your city is attacked, an enemy can plunder 50% of its coin production. Always motivate it using friends or guild members.

Q4: What age should I level the Cathedral to?
For casual players: level 10. For competitive fighters: level 58 to 70. For top-tier fighters: level 100+.

Q5: Does the Cathedral of Aachen produce forge points?
No. Only coins and an attack boost. If you need forge points, build Castel del Monte instead.

Q6: How many blueprints are needed for level 1 to 10?
You need 9 blueprints to unlock the building. From level 1 to 10, you need additional blueprints: 14 blueprints for each level beyond level 1. Total blueprints for level 10 = 9 + (14 x 9) = 135 blueprints.

Q7: What is the best guild contribution level for this Great Building?
The best is the 1.9 thread where a guild member pays 1.9 times the base reward value for first place. This is optimal from level 30 upwards.

Q8: Should I delete the Cathedral of Aachen in Space Age Asteroid Belt?
No. Percentage boosts never become obsolete. A level 58 Cathedral still gives a 75% boost that multiplies with your late-game attack buildings.

12. Final Verdict: Is It Worth Building?

The Cathedral of Aachen is a top-tier Great Building in Forge of Empires for any player who fights manually or auto-battles. Its combination of a permanent percentage attack boost and a stable coin income makes it superior to many event buildings that decay after one era. The 5×4 footprint is reasonable for the benefit provided. New players should build it immediately after reaching the Early Middle Ages. Advanced players should level it to at least 58 for sustained combat efficiency. Avoid leveling it past 70 without a high-level Arc. Build it, motivate it daily, and watch your armies dominate the continent map and guild battlegrounds.