Quiztime - Architectural Model Challenge

The OSINT quiz has a number of quizzes that geolocate distinctive buildings.
This time, the quiz is to figure out a certain model and locate the building.
We ask you to take it easy ...

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https://twitter.com/LarsWienand/status/1503798847453155330?s=20&t=BIDnrYMpMWrhIGC187Aang

Geolocation

There are a total of three words in the image.
The meanings are as follows :
・SAAL (Room)
・TRIBÜNE (theater)
・STANDORT (location)

Apart from the word, when I saw this picture I thought it resembled some architecture, either a concert venue or the Capitol Building.

More similar looks like the Parliament building, so I decided to search around Germany since it is in German. When I was looking for it, I noted that, as far as I could tell from the images, it was small in size for a parliament building. Therefore, I narrowed down my search again to only regional parliaments and only three seats from the front, and found a summary site for 16 German states, which I looked at in order, and Rhineland-Palatinate seemed suspicious.

www.deutschland.de

www.landtag.rlp.de

I looked at the answers of other respondents and apparently they were correct, but I could not find a model of the quiz that was given and the three words in the image did not make sense.

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https://www.google.com/maps/place/Landtag+Rheinland-Pfalz/@50.0053641,8.2718062,180m/data=!3m1!1e3!4m12!1m6!3m5!1s0x0:0x60f0bc0296f082ff!2sDeutschhaus!8m2!3d50.0052915!4d8.2718623!3m4!1s0x47bd970398be2e5d:0x308d83462a1c37f5!8m2!3d50.005401!4d8.271727?hl=de