Ohh, there are a few 'Pokémon Labs' around the world and depending on where you live, you get escorted to the one closest to you. I live in the Netherlands, but my Lab is in Geneva.
Around every lab there are some Pokémon, so you probably have to find all of the labs on the world
And there're Serperior, Salamence, Hydreigon, Rotom nearby
Oh wait I didn't catch the Rotom and Hydreigon
There's a Staraptor on the Golden Gate Bridge, a Spiritomb near Fisherman's Warf, a Scraggy on Alcatraz Island and a Goodra on the other side of the Bay Bridge, SF.