go to pinwheel forest and go across the right bridge. there will be a small opening. go through there and continue. when you see stairs go up. you will be able to enter an opening in the woods. if there is something blocking your way (rocks) you have to catch cobalion first
you get it in pinwheel forest after you get Cobalion in mistareation cave
its in the forest place where the river is it is in a little cut on the side of the bridge
resharam,zekrom,cobalion,virizon,killion,thunderus,landerus,tornaderus,zora,and zorak that's all the ledgends in Pokemon black and white NOT from events.
In Pkemon, Virizon is in the second part of the Pinwheel Forest. You would find the old man who says, "There is strong Pokemon beyond this point," and go behind him.
Victini, Reshiram, Zekrom, Cobalion, Terrakion, Virizon, Landorus, Kyurem, Thundurus, and Tornadus
Cobalion, Virizon, Terrakion Reshiram, Kyurem Latias Uxie, Mesprit, Azelf Regirock, Registeel, Regice, Regigigas Creselia Heatran
Go to Pinwheel Forest and go to the very back clearing and you will find Virizon (You can only go there once you have caught/defeated Cobalion)
Go to Pinwheel Forest.Then When you get there Look For Shaking Grass Places And It Could Be Either These. Pansear,Panpour,Pansage,Virizon Hope It Works :]
After obtaining the National Dex, you go East (Right direction) of Pinwheel Forest. There should be an unblock entrance and you go into it, revealing Virizion, waiting for you.
Reshiram, Zekrom, Victini, kyurem, Terrakion, Cobalion, Virizon
If you're talking about the legendaries, the exclusive one to Pokemon White is Zekrom. You can also catch Kyurem(Giant Chasm), Cobalion (Mistralton Cave), Virizon(Pinwheel Forest), Terrakion (Victory Road), Thundurus (Stormy Route 7) and Landorus (Abundant Shrine).Note : You must have caught Tornadus from Pokemon Black and Thundurus from Pokemon White in order to get Landorus afterwards.
cobalion,kyrem,landorus,reshiram,terrakion,tornadus and virizon