One of the world’s most popular tourist attractions gets thousands of visitors daily. However, when your travel4seniors.com editor was there recently, the shrine was barely visible in thick smog.

Other cities in India also suffer the same auto-emission pollution, including Delhi, Mumbai and Calcutta. If heavy smog is a particular danger to your senior health, and India is on your travel plans, be prepared. Take medicated face masks for long periods of exposure, and do touring in air-conditioned cars and buses.