The Sidi Bashir Mosque is located in the city of Ahmedabad, Gujarat. Due to its unique construction, the mosque is also called Jhulta Minar or Shaking Minarets.
It is believed that the mosque was constructed by Sidi Bashir, a slave of Sultan Ahmed Shah. A conflicting story is that the mosque was built by Malik Sarang, a noble in the court of Muhammed Begada, another Sultan of Gujarat. The mosque was completed in 1452.
There are two minarets in the mosque, each of which is three stories tall with carved balconies. A gentle shaking of either minaret results in the other minaret vibrating after a few seconds, though the connecting passage between them remains free of vibration. The actual cause of this is not yet known. This phenomenon was first observed in the 19th century by Monsier M. Williams, an English Sanskrit scholar