Explanation:

1. The Birla Planetarium is a venue situated in Hyderabad that takes you on a mesmerizing and thrilling odyssey into the mysteriously beckoning outer space to unravel the riddles carefully locked up at its very heart.

2. Elephanta Caves are a network of sculpted caves located on Elephanta Island, or Gharapuri in Mumbai Harbour.

3. Hazrat Bal temple houses an important relic Moi-e-Muqaddas sacred hair of Prophet Muhammad is situated on the left bank of Dal Lake, Srinagar.

4. The Kamakhya Temple is a Hindu temple dedicated to the mother goddess Kamakhya and it is located in Guwahati.