The haven of Kolkata's Botanical Gardens is a welcome respite from the choking noise and crowds. The gardens were founded in 1786 and extend along the west bank of the Hooghly River. It was in these gardens that India's famous black teas were first developed after cuttings were spirited down from tribal regions in Assam.
Birla PlanetariumLoosely styled on the Buddhist stupa at Sarnath, the Birla Planetarium is one of the world's largest and looks impressive when floodlit. Its outer circle forms a small but well-presented, tomb-like gallery featuring astronomer busts and planetary pictures. But the star shows are slow-moving and rather stilted.
Kali TempleBetween Kalighat and Jatin Das Park Metro stations, Kalighat's Kali Temple is Kolkata's holiest spot. The current structure, painted silver-grey with rainbow highlights, dates from 1809. Of course the site is many, many centuries older and possibly the source of Kolkata's name. Inside, pilgrims jostle to present hibiscus offerings to the three-eyed Kali image whose crown can occasionally be glimpsed through the throng from the bell-pavilion.