| 28.04.04 to 08.06.04 |
Castle Festival (Theater or Opera) in the Schwetzingen Rococo Theater |
| 05.06.04 |
Castle illumination with fireworks |
| 07.06.04 bis 25.06.04 |
Heidelberg chamber music festival |
| 25.06.04 to 14.08.04 |
Castle Festival (Theater) in the Heidelberg Castle |
| 03.07.04 |
Klassik Open-Air: Gustav Mahlers "Symphony of the thousand" on the Thingstätte Heidelberg |
| 10.07.04 |
Castle illumination with fireworks |
| 04.09.04 |
Castle illumination with fireworks |
| 25.09.04 |
35. "Heidelberger Herbst" - the big festival in the Heidelberg Old Village |
| 02.10.2004 bis 13.11.2004 |
Enjoy Jazz - Jazz Festival |
| 23.10.2004 |
Open Sound Festival |
| 24.11.04 to 22.12.04 |
Christmas Markets in the Heidelberg Old Village |