Just outside of Ahmedabad (take a bus) is this glorious step well. I'm standing about 2 levels down to take this photo. The well is designed almost completely underground and has a maze-like ladder that takes you to the bottom to gather fresh water. Despite being underground, it's captures sunlight in a spectacular way, with shadows and sunbeams playing catch all day long. Even more enchanting are the bright green parrots that flit around! This mysterious place is completely off the track and many locals aren't even aware of its magic!
There are plenty of local city buses that can get you here from city center - just ask at one of the rotundas or hop into a rickshaw for a quicker trip.