What is your idea of an old German town? Heidelberg-like romanticist buildings, medieval wooden housings, Karlsruhe-like baroque or classicist cities? Freiburg

What is your idea of an old German town? Heidelberg-like romanticist buildings, medieval wooden housings, Karlsruhe-like baroque or classicist cities? Freiburg has a rather large historic center with a cathedral/monastery church and gates, plus old quarters with lots of red sandstone.