Underground House is a famous picnic spot on the banks of River Ganges
at Chandannagore. This beautiful building is a fine example for the architectural and aesthetic sense of yester years.
The main attraction of Underground House is its lower floor submerged in the waters of River Ganges. Rabindranath Tagore has visited this place. The famous social reformer Pandit Iswar Chandra Vidyasagar also has stayed at the Patal-bari.
Hooghly Railway Station is the nearest railway station and Netaji Subhash Chandra Bose International Airport is the nearest airport.