Kanheri Caves, Mumbai
Concierge.com's insider take:
The Buddhist Kanheri Caves are spread out over the hills in a virtually unspoiled forest overlooking the northern suburb of Borivli. Most of the caves, which date from the second to the ninth century AD, were used by monks for shelter and meditation during the four months of the monsoon season. To enjoy the blissful peace and quiet that attracted the original occupants, avoid visiting on weekends. To reach the caves, catch one of the many trains on the suburban line from Churchgate Station to Borivli East. The trip takes about 50 minutes.