Aridwaramangalam Padaleswarar Temple

Aridwaramangalam Padaleswarar Temple (அரித்துவாரமங்கலம் பாதாளேஸ்வரர் கோயில்)
is a Hindu temple located at Aridwaramangalam in Tiruvarur district, Tamil Nadu, India. The temple is dedicated to Shiva, as the moolavar presiding deity, in his manifestation as Padaleswarar. His consort, Parvati, is known as Alankaravalli. The place is also known as Aradhai Perumpazhi. 
Significance.
It is one of the shrines of the 275 Paadal Petra Sthalams - Shiva Sthalams glorified in the early medieval "Tevaram" poems by Tamil Saivite Nayanar Tirugnanasambandar.
Pancha Aranya Sthalams: Aranyam means forest and the following five temples at different forests Thanjavur / Kumbakonam / Thiruvarur region are revered as “Pancha Aranya Sthalams”.
Legend.
This is one of the few temples where Shiva and Vishnu co-exist. Legend has it that just prior to his wedding with Parvati, Shiva went into hiding underground (Patala), just for fun. Vishnu, Parvati's brother, took the form of a boar and went in search for Shiva underground. Since Vishnu (Hari) created a door (Dwar) to go underground in search of the bridegroom Shiva, the name of this place became "Haridwara"mangalam. Since Shiva went and hid in Patala, the name of the main linga in this temple became Patala Eshwara. Shiva's consort at this temple is Parvati and the name of the devi is Alankaravalli. Unlike other Shiva temples, there is no special sannadhi for Durga here since Goddess Alankaravalli herself is believed to be a manifestation of Goddess Durga.