It's called the Pyramid Valley on kanakpura road. 30 kms from banashankari and 17 kms from ravi shankar ashram.
Photography is prohibited inside and hence the pics are only from the exterior of this hall. A good thing about this place is you get guided meditation. Once you enter inside it's peaceful. Very peaceful. There are 2 places you can meditate. One, in the hall. Two, high up the spiral staircase called king's chamber. You need to meditate at least 15 minutes in the hall to climb up. Lovely experience up there. All the cosmic energy from the pyramid was oozing as sweat during the meditation. Amazing!!
Further more the place has a lake, a souvenier/books room, good vegetarian food n restrooms!! Enjoy!!