Ost-In-Edhil and the lands of Eregion

[Kuruharan]

Probably.

Elves tended to have that effect on the places they lived.

This is cited in Fellowship.

"There is a wholesome air about Hollin. Much evil must befall a country before it wholly forgets the Elves, if once they dwelt there."
"That is true," said Legolas. "But the Elves of this land were of a race strange to us of the silvan folk, and the trees and the grass do not now remember them. Only I hear the stones lament them: 'deep they delved us, fair they wrought us, high they builded us; but they are gone.' They are gone. They sought the Havens long ago."