observation deck of the vrihat samrat yantra the world`s largest sundial.

abstract ancient architecture asia astrological astronomical astronomy blue building built calculation city colorful coordinates culture destination eclipses extraordinary famous heritage historic historical history india indian instrument instruments islam jaipur jantar knowing landmark largest list major mantar measure measuring medieval observation observatory old outdoor outside planets predicting problems rajasthan religion samrat science sky solar speed star stone sundial system time tourism tower town travel unesco unescos unique vrihat world worlds yantra