Establisher of Four Dhams

The Char Dham defined by Adi Shankaracharya comprises 

Badrinath, 

http://2twi.blogspot.com/

Dwarka, 

http://d08r.blogspot.com/

Puri 

http://3jbs.blogspot.com/

and Rameswaram

http://bridgroom.blogspot.com/