Neúnial Citadel upon Evedim lake, where dwells lady Galadriel and remnants of Nandor (Green Elves) in Eriador on beggining of Second Age.
Othrond, ancient hold which survived flood of Beleriand and serve as a seat of High King Gil Galad in Lindon.
Golden gardens of Othrond are remarcable wonder reminding grace of Noldorin lords in past days of Beleriand.
Most of the Othrond however lays in underground, craved into the hillside, there are large halls to be found, builded with help of Nandor (green elves of Ossiriand) and dwarves of Blue Mountains alaik.
Another of First age rare remnants is Himling, in this stronghold once ruled Maedhros as High King of Noldor, but now its most notable settlement of remnant isles (Tol Fuin, Tol Himling and Tol Morwen).