I was strongly recommended to read the book titled, "Spectacle" written by
David Rockwell & Bruce Mau.
This book contains 256 pages of the most interesting events and celebration in the world including the mega Kumbh Mela, held in India, where several lakhs of people assemble to take a holy dip in the river.
This photo-driven book surveys an extensive range of events, happenings, densely-populated locales and visually-arresting traditions throughout the world.
Here is a review that I read in Amazon:
"An enlightening experiences into the most miraculous community or urban places bringing places and ideas together. And it is particularly overwhelming to review this issue from the lens of an architect. A must Buy!!!"
Another short review:
" Spectacle takes a look at the reasons why people gather together - sometimes in the most unwelcoming circumstances - to celebrate, to mourn, to affect change, to create. "
I have not yet bought this book. I thought I could collect more reviews and feedback.