For Sikhs the most sacred site in the world is the Golden Temple in Amritsar. First built over 400 years ago out of brick, it was destroyed and later rebuilt using marble and gold leaf.

An analysis by online marketplace Judaica Web Store shows that Paris's Notre-Dame saw the most number of Instagram hashtags, while Golden Temple is most visited annually.

Image caption, The Harmander Sahib (Golden Temple) in Amritsar ... The sacred water is believed to have healing powers. The temple is built on the level of the water, which people cross via ...