Take a look at the Last Bridge, the easternmost bridge built by the Kings of Arnor that marks the border between the Lone-lands and the Trollshaws, where the refuge of Rivendell lies.
The Last Bridge is the easternmost bridge built by the kings of Arnor upon the Great East Road. It marks the border between the barrens of the Lone-lands and the Trollshaws in the shadow of the Misty Mountains, where lies Rivendell, refuge of Elrond Halfelven.
As Strider led Frodo Baggins and his companions to Rivendell they crossed the Last Bridge, and there Strider discovered a beryl - an Elf-stone, or more specifically, an emerald - left there as a sign that friends had passed that way. Indeed, the mighty Elf-lord Glorfindel had left the stone, and later aided in the rescue of Frodo from the Nazgūl at the Ford of Bruinen.
Players of The Lord of the Rings OnlineTM: Shadows of AngmarTM will want to visit this landmark from the books, for more than just a bridge might be found there. . .
