Siddhivinayak, Mumbai

 This is by far the most popular and most visited temples in entire Maharastra. It is estimated that atleast 75,000ppl come on the day of Tuesday alone to attend the morning puja which is done with a huge fanfare apart from consistent visitors throughout the week. This is a place where you will also find a lot of actors and politicians who frequent this temple a lot. In fact such is the popularity that apple CEO Tim Cook began his 2016 India trip with morning prayers at the temple. Also many actors before the launch of their movies come here to take the blessings.
Well this temple was built in 1801 with just a 3.6 m x 3.6 m square brick structure with a dome-shaped brick. The building was donated by a rich woman called Deubai Patil who had everything but only thing which she felt bad about was she being childless, Deaubai developed the temple so that the Lord should grant children to other barren women. Ramakrishna Jambhekar Maharaj, a loyal disciple of the Hindu saint Akkalkot Swami Samarth buried two idols in the front of the presiding deity of the temple on the orders on his guru. As prophesied by Swami Samarth, later on after 21 years of the burial of the icons, a mandar tree grew at the same spot with a svayambhu Ganesha in its branches which led to its origin as well as popularity.