Temple Architecture

As all know the most of the hindu temple architecture is from India.Most of the temples in Sri Lanka and India are look like same. But the Indian temples are massive that we cant even imagine.Its a miracle how they built it.Because they were built in the time there were no technology. They were built using lot of human resources. Also mainly the elephants to cary needed things. Most architectured temple is Mathurai Meenakshi amman. Which also competited in the wonders of the world becuase of its unique architecture.