- Protestant chapel Dasbach
- Romanesque tower German-Rhaetian Limes
- Military Cemetery Idstein
- Manor Gassenbach
- Tunnel in Niderhauzene
- Education Center Kalmenhof
- Synagogue Idstein
- Church of St. Martin in Idstein
- Church Unions
- Castle Idstein
- Witches Tower
- Tunnel Idstein