Check the time. [Text and pictures by Mayank Austen Soofi] Formally Delhi’s largest pissoir, this 18th century tongue-red solar observatory underwent refurbishment that includes installation of public toilets. Built in the early 1700s by the founder of Jaipur, Maharaja Sawai Jai Singh II, this curious complex of concrete hemispheres, quadrangles and circles was originally called Yantra Mantra, meaning “instrument and formulae”. It is these yantras, or instruments, that make up the five most prominent landmarks within a landscaped garden. As the observatory’s central building, the Samrat Yantra is a giant quadrangular slab of rubble masonry. Ascending to more than 20 metres, its stairs look to the highrises of Connaught Place, which one author described as “purpose-built to obscure its [Jantar Mantar’s] view