Apart from the famous Harki Paudi, there are many temples in Haridwar that are worth visiting. They are very close to each other and you can hire an auto from Harki Paudi to go around. Many of the temples have robotics but if you have seen one, you have seen them all. There is a beautiful glass temple and the famous Bharat Mata temple.
Saarthi Krishna in the Glass Temple
Krishna lifting Govardhan Parvat on his little finger in One of the Temples with Robotics
In the Parnami Temple, there is a huge statue depicting the Sagar Manthan. This picture depicts the face of Vasuki Nag and the Asuras. Vasuki was used as the rope for Sagar Manthan.
This is the Mount Mandranchal that was used as the Dasher.
Arjun with Lord Krishna as his Saarthi
Architecture Outside one of the Temples