Musamman Burj (Agra Fort)
Musamman Burj also known as the Saman Burj or the Shah-burj, is an octagonal tower standing close to the Shah Jahan's private hall Diwan-e-Khas in Agra Fort. == History == Musamman Burj was built by Shah Jahan for his beloved wife Mumtaz Mahal.
Source: Wikipedia — Musamman Burj (Agra Fort) (CC BY-SA 4.0)