Hindu monuments likely existed then, but they've not survived, Potentially simply because they weren't created of stone. A few visuals of recognizable Hindu deities and votive pillars have survived from about 100 bce to 200 ce. Hindu temple design commenced in earnest within the fifth century ce in northern India https://hanumanmandiradelaide.com.au/how-to-celebrate-hanuman-jayanti-at-home-a-guide-to-a-spiritual-and-joyful-celebration/