The name of the valley is Rivendell, or in Elvish, Imladris.
The name of the city is Rivendell.
The master of Rivendell has always been Elrond. He established Rivendell in the second age with some of the remnant of the Noldor and the Sindar.
Rivendell was a place where the house of Elrond, the half-elven, was situated. Many elves lived there, and the main characters in both 'The Hobbit' and 'The Lord of the Rings' visited Elrond in Rivendell.
They mark the path to Rivendell.
The name of the valley is Rivendell, or in Elvish, Imladris.
The name of the city is Rivendell.
Radio Rivendell was created in 2001.
Leaving Rivendell was created in 2005.
A Night in Rivendell was created in 2000-04.
At Dawn in Rivendell was created on 2003-03-11.
Rivendell Bicycle Works was created in 1994.
An Evening in Rivendell was created on 1997-09-30.
Rivendell is in the north-east of the Trollshaw region, which is east of bree-land and the lone-lands. To get there you have to follow the road through the region until you get to the river. you then cross the ford of bruinen and climb up the mountain on a winding path. You will eventually get to the gate of imladris (elven name for rivendell) and you go down that windy path and you end up in rivendell valley. The last homely home where you find elrond, frodo, gandalf and the other hobbits is at the east, take the second path at the right. I'd advise you to talk to the stable-master at the west, that way you can just get a rental to get to the valley next time.
That would be impossible as Rivendell only exists in Tolkien's books and the movies derived from them.
If, by "the elves's" you mean Glorfindel, the elf lord sent from Rivendell to find Frodo and company, then his horse's name was Asfaloth.
Elrond