Hindu monuments probable existed then, but they have not survived, Potentially because they were not designed of stone. A handful of photographs of recognizable Hindu deities and votive pillars have survived from about a hundred bce to 200 ce. Hindu temple building commenced in earnest with the fifth century ce https://hanumanmandiradelaide.com.au/how-to-celebrate-hanuman-jayanti-at-home-a-guide-to-a-spiritual-and-joyful-celebration/