There are two Amman temples in Haridwar. Chandi Devi temple & Manasa Devi temple.
Chandi Devi: The temple is situated atop the Neel Parvat on the Eastern summit of the Sivalik Hills, the southernmost mountain chain of the Himalayas. The Devi idol in the Chandi Devi Temple was installed by Adi Shankaracharya.
Mansa Devi: The Mansa Devi Temple in Haridwar is dedicated to Goddess Mansa, a form of Shakti. It’s located on top of Bilwa Parvat in the Shivalik Hills. Known as one of the significant Siddh Peeths.