Kullu Dussehra is a famous festival celebrated in Himachal Pradesh, particularly in the Kullu Valley. It is one of the most well-known and unique festivals in the region.
- Andhra Pradesh has its own Dussehra celebrations, but it is different from the one celebrated in Kullu.
- Tamil Nadu also celebrates Dussehra, but with distinct regional traditions.
- Uttar Pradesh celebrates Dussehra, but it is not specifically associated with the Kullu region.
Thus, the correct answer is Himachal Pradesh.