Hey Pouakai,
thanks a lot for your hard work. I really enjoy playing with your mod. It would be cool, if you can add some additional german wonder to the game. I'm not a genius when it comes to boni. I don't know what would suit your taste, so i'll just post a few things that deserve to be a wonder in this beautiful game.
1)
Port of Hamburg (Hamburger Hafen) -
wikipedia
Build in 1189, the port of Hamburg is one of the biggest and most important harbors in Europe and Germany. Without this area, Hamburg wouldn't be the same today. As ingame-boni i would love to see a additional gold from harbours/seeports (like +2 Gold from both so it doesn't collide with Carthago). More gold would fit better but we already have a few +gold per trade route-wonder in the game.
2)
Muinch Hofbräuhaus (Hofbräuhaus in München) -
wikipedia
The inn was originally built in 1598, but has become the origin of the most important brewery in the whole country. Beer was already served in the ancient Egypt and has been a staple food for tousand of years. As boni i would prefer a food-releated, maybe like additional 20% growth in the city it was build and additional 5% or 10% in your empire.
3)
Museum Island of Berlin (Museumsinsel in Berlin) -
wikipedia
Museum Island is the name of a small area in the northern Spreeinsel. It contains a couple museums (first opened in 1830) and is now on the UNESCO list of World Heritage Sites. You can visit there amongst other the Pergamon Altar and a replication of the Ishtar Gate. As bonus i'd like a cultural one. But i don't know any worthwile, maybe something like 10 Culture? I know it's a lot but its a late wonder.
4)
Dresdner Frauenkirche -
wikipedia
Build as an christian church in 1743, the Frauenkirche is now a memorial landmark against war and destruction. So it could be a really cool wonder in CiV, giving +3 Faith and another bonus while you are at peace (like the Swords into Plowshares-Belief)
5)
Dresdner Semperoper -
wikipedia
Another cultural masterpiece. Build in 1841, its an opera house which featured a lot of premieres of Wagner and Strauss. The building itself has an special style. I quote from wiki: "The building style itself is debated among many, as it has features that appear in three styles; Early Renaissance and Baroque, with Corinthian style pillars typical of Greek (classical revival)." I'd love to see this building in the game.