Gol Gumbaz is the mausoleum of Mohammed Adil Shah, Sultan of Bijapur and the seventh ruler of the Adil Shahi dynasty. The tomb, located in Bijapur is about 500 kms from Bengaluru in Karnataka. The mausoleum took about 30 years to construct and was completed in 1656. The name finds its roots from Gola gummata deriving from Gol Gombadh meaning "circular dome". It is constructed as per the Deccan architecture".
The architectural style of the Gol Gumbaz is Deccan Indo-Islamic which is a confluence of Indo-Islamic and Dravidian architecture. A significant feature of the Gol Gumbaz is its central dome which stands without any support of pillars. This central dome is the second largest dome in the world after the dome of St.Peters Basilica in Rome. Beautiful petals covering the drum are carved at its base. Staircases in the walls of the main building lead to the seven-story octagonal tower at each of the four corners. Each story has seven arched windows and all are capped by smaller domes. The seven floors of the towers are demarcated by a projecting cornice and a row of arched openings marking each level. A broad eighth story gallery, accessible by winding staircases in the four towers, circles the dome and hangs out at around 3.3 m. This gallery is an acoustic marvel and is called the “Whispering Gallery”. A commendable piece of civil engineering, this amazing echo system reflects any sound for over eleven times. Such is its impressive design that one can even hear the faintest tick of a watch.