Hindu Monuments likely existed then, but they've got not survived, Maybe because they were not crafted of stone. A number of images of recognizable Hindu deities and votive pillars have survived from about one hundred bce to two hundred ce. Hindu temple design commenced in earnest in the 5th century https://hanumanmandiradelaide.com.au/how-to-do-pooja-on-hanuman-jayanti-a-step-by-step-guide-for-a-meaningful-celebration/