Here is a list of few places that you may considered visiting once you are in Patna. 

1. Golghar, Patna

2. Ruins of Pataliputra, Patna

3. Khuda Bakhsh Oriental Public Library, Patna

4. Nalanda Mahavihara, Patna

5. Takht Sri Patna Sahib, Patna

6. Patna Museum, Patna