

Jaipur, India
We started today visiting the Jantar Mantar observatory, the biggest of 5 built by Jai Singh II and immaculately looked after! It was an incredible place, built between 1728 and 1734 with 16 instruments, some of which are still accurate enough to use regularly today. The Unnatansha Yantra was used to determine the positions of stars and planets at any time of the day and night. There were two sunken marble hemispheres in the floor which mapped out the heavens, an...