B. M. Birla Planetarium

At Statue Circle, where C Scheme's tree-lined avenues converge around a marble likeness of Sawai Jai Singh II, a monumental gateway rises that first-time visitors often mistake for a genuine piece of Rajput fortification.

• It is the entrance to the B. M.
• Birla Auditorium complex — a full-scale homage to the Ganesh Pol of Amer, worked in jali screens and painted frescoes.
• Pass through it and you are not in a palace at all, but on a working science campus whose headline attraction is a domed planetarium that has been teaching Jaipur to read the night sky for decades.
• The complex spreads across roughly 9.8 acres and is run by the Birla Institute of Scientific Research, founded to carry forward the scientific ambitions of the industrialist Braj Mohan Birla.
• Alongside the planetarium sit a large auditorium — one of the biggest in the country, and the venue for much of the city's lecture and convocation calendar — plus a library, seminar halls, an astronomical observatory and a science museum of working models.
• One caveat worth knowing before you arrive: the institute's own website has listed the science museum as closed for renovation, so treat the sky show as the reason to come and any museum access as a bonus.
• Telephone ahead if the exhibits are your main draw.
• Sky shows run at 1 pm, 3 pm and 5 pm, last around fifty minutes, and are narrated in Hindi — a point non-Hindi speakers should weigh honestly before committing an afternoon.
• The visuals carry a great deal on their own: the dome sweeps through planetary motion, eclipses, the life cycle of stars and the exploration of Mars, and for a child who has never seen an unpolluted star field it lands with real force.
• An interactive question session often follows.
• The planetarium closes on Mondays, and no shows are screened on the last Wednesday of each month for maintenance, so build your itinerary around those two gaps rather than discovering them at the gate.
• For vegetarian travellers this corner of Jaipur is comfortable ground.
• C Scheme and MI Road, both a short ride away, hold some of the city's most dependable pure-vegetarian kitchens.
• The habit worth keeping anywhere in Jaipur, though, is this: a "pure veg" board here reliably means no meat, but it says nothing about egg.
• If you avoid egg, ask specifically about cakes, pastries, breads and creamy dressings rather than assuming the badge covers it.
• There is no restaurant inside the complex, so plan to eat before or after your show.
• The planetarium earns its keep as Jaipur's best foul-weather and fierce-heat option.
• When a May afternoon pushes past forty degrees, or a July downpour drowns your fort plans, a cool dark dome in the middle of the modern city is a genuine gift.
• Pair it with the Central Park jogging loop just outside, or with Albert Hall Museum and Birla Mandir close by, for a half-day that never leaves new Jaipur.