4, Shakespeare Sarani
Open from 10:00-18:00 Mond-Frid, 10:00-13:00 Sat.
Kolkata map and a lot information free about transport, sights, etc. of the city. Ask their for print it.
-West Bengal Tourism:
Open from 10:00-17:30 Mond-Frid, 10:00-13:00 Sat.
With less information, they will try to sell you a trip.
In the way for get a Marble Palace permit
Magazine with a lot information about cultural performances. 30Rs