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Lalbaugcha Raja is the most famous Sarvajanik Ganapati,  kept at Lalbaug, a prominent locality in Mumbai during Ganesh Chaturti festival. The idol is kept for public display for Eleven days thereafter it is immersed on the auspicious day of Anant Chaturdashi. The pendal attracts hundreds of thousands of devotees during the festival and is the prime attraction.There are two queues for taking blessings of the Lalbaugcha Raja - THE NAVSACHI LINE and MUKH DARSHANACHI LINE.Around 18,00,000 people visit the mandal on the 1st day of ganeshotsav. It takes around 25-30 and sometimes 40 hours for THE NAVSACHI LINE and 15-20 hours for MUKH DARSHANACHI LINE to reach the idol due to the 5 - 6 km. long queues. Many times MUKH DARSHANACHI LINE reaches Byculla and THE NAVSACHI LINE reaches very very far.
It is believed that this Idol of Lord Ganesha is Navsacha Ganpati (which means the "one who fulfills all wishes") and hence over 1.5 million people visit this Ganesh Pandal daily during the 10 day Ganesha festival. Soon Lalbaugcha Raja may become a place of pilgrimage.
Since the last few years, a few days prior to the Ganesh Chaturthi, a Mukh Darshan Ceremony (Lalbaugcha Raja's first look and photoshoot) is organized by the Lalbaug Sarvajanik Ganeshostav mandal. This year the ceremony took place on Thursday, September 5, 2013. This unveiling of Lalbaugcha Raja is covered every year by all national and regional channels.
[[File:Lalbagcha Raja (2011).jpg|thumb|[[File:Lalbaugcha Raja.jpg|thumb|150x150px|
]]Lalbaugcha Raja in 2013|180x180px]]
|(tr)Lalbaugcha Raja is the popular Ganesh Idol of(tr)||Lalbaugcha Raja Sarvajanik Ganeshotsav Mandal. The Mandal, formerly known as Sarvajanik Ganeshotsav Mandal, Lalbaug was founded in 1934 at Lalbaug Market.
The Mandal, formerly known as 'Sarvajanik Ganeshotsav Mandal, Lalbaug' was founded in 1934, because of a vow (Nav'as) for construction of the present Lalbaug Market at its existing place. The market place at Peru Chawl was shut down in 1932. Hence, the fishermen and vendors who used to sit in the open place vowed to Ganesha for permanent place for their market. With the consistent efforts and support of the then local Councillor-Late Shri. Kuwarji Jethabhai Shah, Dr. V. B. Korgaonkar, Shri. Nakhawa Kokam Mama, Bhausaheb Shinde, Dr. U. A. Rao and the local residents, the landlord Rajabai Tayyabali agreed to give a plot for construction of a market. As fulfillment of their wish, the fisherman and the traders established the Ganesh Idol on 12 September 1934. The idol was dressed in the customary fashion of fisherman. Since that day onwards, this Lord Ganesh has become popular as it fulfills the wishes of devotees. The Mandal was formed in the era when the freedom struggle was at its peak.