Rivendell
Rivendell, the last homely house. This is where Elrond dwells. It is here also where (i think) the White Counsil meets. It is hidden in this valley, only one path leads in and out of it. The company of 13 dwarves, Bilbo, and Gandalf almost missed it one there trek. It is one of the safest, next to Minas Tirith, places to be.