In Episode 9, of Season 4, "Let's Get Out Of Here".
is a motorcycle garage owned by Marcus, the alpha leader of the local
Shreveport pack of werewolves - the one that Alcide joins.
We first see it when Alcide goes there to tell Marcus that he wants in the pack.
He admits that the only reason he wants in is to please his girlfriend, Debbie. But Marcus is OK with that.
then asks Alcide for a favor. He thinks he has Sam coming over to
talk, and he wants Alcide to be there. Alcide says he's not into
beating up guys he doesn't know, but Marcus assures him he's just
trying to frighten him, and wants Alcide around because he's big &
scary. So Alcide agrees to be there.
We see it again when Sam's shapeshifter brother, Tommy, shows up at the garage, disguised as Sam.
walks in like he owns the place, proceeds to mouth off like a badass,
and is promptly beaten to a bloody pulp by the pack members, before he
morphs back into Tommy, and Alcide finally has enough and carries him
out of there.
What is it actually, in real life?
A custom motorcycle garage. Just nowhere near Shreveport.
location: Marcus' Motorbike Garage
Where can I find it in real life?
This is actually Powerplant Custom Choppers, at 7416 Melrose Ave, in Los Angeles.
That's on the south side of Melrose, about midway between Fairfax and La Brea.
From Melrose Ave, this address appears to be nothing more than a
narrow doorway wedged between S&G boutique and a medical marijuana
dispensary called "Buds".
But follow that narrow hallway back to the alley (south of Melrose), and here is what you find:
You can get custom-built bikes here, starting at $25,000 and up.