After a gap of 15 years, Kolkata's iconic double decker buses have returned to the streets of the City of Joy but with a twist! Chief Minister Mamata Banerjee unveiled two such buses on Tuesday, stating that they will be used for hop-on-hop-off tours, passing through iconic landmarks and heritage buildings like the Victoria Memorial. The two will initially be used for puja parikrama and pandal hopping and later for tourism. The blue and white eco-friendly buses will have folk artists perform to showcase the rich culture of Bengal. The new buses will have CCTV cameras, 16 seats on the upper deck, automatic doors among other features.