Aishwarya Rai Wedding - Amitabh Bachchan's home a fortress ahead of Abhishek Bachchan

Ahead of his son Abhishek Bachchan marriage to the gorgeous and hot Aishwarya Rai Wedding, Bollywood mega superstar Amitabh Bachchan 's home in Mumbai resembles a fortress.

Every single person going in and out is given a thorough once-over and curious passersby are promptly given the boot by ferocious looking security guards.

You could be forgiven for thinking that "Prateeksha", the Bachchans' sprawling bungalow in suburban Juhu, is the venue of some top-secret meeting. Rather it is where the wedding of the century, the much-awaited meeting of minds between Aiswarya rai and Abhishek bachchan will take place on April 20.

As the Bachchan family prepares to welcome Aishwarya rai into its fold on Friday, one thing evident about the big event is the amount of secrecy that has shrouded it.

Details of everything from the guest list to the "mehendi" ceremony, the bride's dress and even the honeymoon have all been kept top secret.

Both Aishwarya Rai Wedding and the Abhishek Bachchan Wedding have consistently refused to talk about the wedding or the details and all guests have been sworn to secrecy.

Even while the marriage of the former Miss World and the scion of the Bachchan family evokes immense curiosity all around, those actually involved in the wedding have been very tight-lipped.

Bachchan himself is said to be supervising each tiny detail of his son's abhishek bachchan wedding. Guests include industrialist Anil Ambani and wife Tina, Samajwadi Party leader Amar Singh, who will take time off from the Uttar Pradesh elections, and other close family friends.

The three-day wedding celebrations will also see some of the Bachchans' closest friends from the film industry gracing the occasion.

Karan Johar , Goldie Behl and wife Sonali Bendre , Apoorva Lakhia , and Anupam Kher, wife Kiron Kher and son Sikander will all be part of the celebrations.

"The Bachchans' are famed for guarding their privacy. The media has been at their heels for any information they can get but even guests and those involved in organising the wedding have been asked to reveal no details," sources said.

Bachchan even went to the extent of requesting neighbours not to allow media into their houses on the day of wedding.

The couple got engaged on January 14 after a great deal of media speculation on their relationship.