While the Elephanta Caves are more tourist attraction than religious place, they contain an important historical rock-cut temple dedicated to Lord Shiva that dates back to the 7th century. In the main hall, which is supported by large pillars, you'll find the imposing Mahesamurti sculpture of Lord Shiva. It shows him in his three different aspects -- creator, protector, and destroyer. Other smaller sculptures of Lord Shiva depict his accomplishments.
Elephanta Island, where the caves are located, offers a delightful view of the Mumbai skyline. Try to time your visit so you see the sunset over the city.
Where: Off the coast of Mumbai, accessible by boat from the Gateway of India. The journey takes an hour and the guides provide a good introduction to Hinduism on board the boat.
More Information: Archeological Survey of India website.