Dear friends,
Kindly go through the link. U can find the place called Sri kshethrakudupu, where Naarayan Nagabali is performed. This temple of Lord Anantha Padmanabha is situated in karnataka state. Kuke Subramanyaswamy temple is also famous place for removing Rahu Dosh. For kalsarpa Dosh one can visit Sri kalahasthi Temple in Andhra pradesh. For Rahu worship one can visit , Thiru Nageshwaram temple near Kumbakonam in Tamil nadu. Thirupamburam is famous temple for Rahu ketu worship which is also situated in Tamil Nadu.
http://www.ourkarnataka.com/temples/kuduputemple.htm
Hope these informations helps who ever needs to do remedies for their Pitru dosh.
Regards,