Hindu monuments probable existed then, but they've got not survived, Possibly because they were not built of stone. A number of visuals of recognizable Hindu deities and votive pillars have survived from about 100 bce to two hundred ce. Hindu temple design began in earnest with the 5th century ce https://hanumanmandiradelaide.com.au/lord-shani-dev-hawan-ceremony-at-hanuman-mandir-south-australia/