The Dagshai Jail Museum or Dagshai Central Jail in India was built in 1847, a T-shaped building of local stone masonry with 54 tiny cells. Apart from the Cellular Jail in the Andamans, it is the only other Indian museum which once was a jail.It is situated 6,087 feet (1,855 m) above sea level, 11 km (6.8 mi) from Solan, in Himachal Pradesh and maintained by the Engineering Wing of the Indian Army. The structure holds 54 maximum security cells, out of which 16 cells were used for severe punishments. The cells were hardly ventilated and there was no source of natural light. The details of each cell are mentioned on title boards.