Welcome ahegaobirthday from near Munich - always nice to see new members „entering“ Pentax Forums!
IMO Berlin is a really nice location for photography - have been there for some days around four years ago.
Maybe you’re interested in some location tipps - if so it may be worth looking into the books „Berlin fotografieren“ by Andreas Böttger and Nancy Jesse - two parts availlable „Architekturschätze und geheime Orte“ and „Szeneviertel, Kieze und Berliner Leben“. But maybe not appropriate if you‘re especially looking for „disappointing landscapes“.