Photo: MjFe (Link to Wikipedia Germany), CC BY 3.0 Free historic sites in Weimar
Photo: MjFe (Link to Wikipedia Germany), CC BY 3.0 Weimar Marktplatz
Free, alwaysGoethe House exterior
Free outside, paid inside
Photo: Steffen Schmitz (more photos), CC BY-SA 4.0 Herderkirche
Free, always
Photo: Unknown authorUnknown author, Public domain