Vrindavan Chandrodaya Mandir is the world's tallest temple under-construction at Vrindavan , Mathura , India . When completed, it will be the tallest religious monument in the world. At cost of ₹ 300 crore (US$45 million) it will be one of the most expensively built temples in world by ISKCON Bangalore . The temple has a footprint of about 5 acres and rises to a height of about 700 feet (213 meters or 70 floors) and a built-up area of 5,40,000 sq. ft. The temple is planned to be vibrant with festivals and religious activities throughout the year. It is going to be a must watch place for every Hindu.