Hindu monuments probably existed then, but they have not survived, Most likely given that they weren't crafted of stone. Some pictures of recognizable Hindu deities and votive pillars have survived from about 100 bce to two hundred ce. Hindu temple design commenced in earnest within the fifth century ce in https://hanumanmandiradelaide.com.au/shani-dev-temple-in-adelaide-a-sanctuary-of-faith-and-divine-blessings/