Hindu monuments most likely existed then, but they have got not survived, Possibly because they weren't crafted of stone. A number of visuals of recognizable Hindu deities and votive pillars have survived from about a hundred bce to 200 ce. Hindu temple design started in earnest within the 5th century https://hanumanmandiradelaide.com.au/lord-shani-dev-hawan-ceremony-at-hanuman-mandir-south-australia/