The Observatory is one of Forge of Empires' Great Buildings from the Colonial Age. Its main effect — Increases Guild Treasury contributions — is what makes it a target for most serious players.
Observatory — Overview
| Property | Value |
|---|---|
| Era | Colonial Age |
| Primary Effect | Increases Guild Treasury contributions |
| Priority | Essential for guild members |
Optimal Leveling Strategy
Best kept between levels 60-90 for optimal Guild Treasury payout ratio
1.9 Thread Tips for Observatory
The standard 1.9 thread math applies: contribute enough FP to lock a P1-P5 position, then let the Arc bonus multiply your rewards. For Observatory specifically, keep an eye on the P1 vs P2 payout gap — sometimes P2 is more efficient depending on current contributions.
Arc Bonus Impact on Observatory
Every FP you commit to Observatory is multiplied by your Arc bonus. At an 80% Arc, a P1 payout of 100 FP becomes 180 FP. That's why upgrading The Arc always comes before upgrading other GBs beyond level 10.
Related GBs
Calculate Observatory Investment
Use the free calculator to test your build against the exact game math.
Open Calculator →