Cherrapunji
During the monsoon, seven separate streams pour off a single cliff face in near-parallel lines, creating the spectacular Seven Sisters waterfall — one of the widest waterfalls in India. From the viewpoint across the gorge, you get the full width of all seven cascades at once, framed by the green plateau edge and the Bangladesh plains far below. It is one of those rare natural spectacles that photographs simply cannot do justice to.
This waterfall is essentially dry outside monsoon — plan specifically around June to September if seeing it in full flow is important to you.