Hindu monuments probably existed then, but they've not survived, Potentially because they were not designed of stone. A few photographs of recognizable Hindu deities and votive pillars have survived from about one hundred bce to two hundred ce. Hindu temple building started in earnest with the 5th century ce in https://hanumanmandiradelaide.com.au/establishing-neem-karoli-baba-statue-at-hanuman-temple-south-australia/