Shaniwar Wada Palace, Parvati Hill, Aga Khan Palace, Vetal Tekdi, Pashan Lake, Shinde Chhatri, Peacock Bay, Osho Ashram, Khadakwasla Dam, Empress Garden, Rajmachi, Mulshi Lake and Dam, David Synagogue, Dagdusheth Halwai Temple, Raja Dinkar Kelkar Museum, National Defence Academy, Adlabs Imagica and many more.
Hi Siddhi, Here is a link to Tripoto's curated travel recommendations for Pune: https://www.tripoto.com/pune/places-to-visit
You'll find both, well known and hidden spots around the city for you to explore.