The logo links to search results about Independence+day+india. Google has made it a trend to create new Google logos (also called Google Doodles) mostly every day to celebrate notable worldwide events, special days or famous birthdays of noted celebrities. Now Google also maintains an archive of Google logos, where you can find a lot of amazing logos.
Its was nice to find Google celebrating the Indian Independence day today with a brand new logo featuring the Red Fort where the annual speech is delivered by the PM of India. I remember Yahoo, Orkut etc also hosted Independence day logos in the past. What are your thoughts about these logos?