antique 19th century Germany china cup saucer, unmarked topographical scenic view

Unmarked antique German porcelain cup and saucer, with a topographical scene that I don't recognize. Very detailed and beautifully made, I believe this is probably mid 1800s vintage.

It's a demitasse size, saucer 5 1/2" in diameter, cup just 2 3/4" tall. No chips or damage to these pieces, and the finish and gold trim look very good without noticeable wear.