Dirk Gently's Holistic Detective Agency
Welcome to Bergsberg Sign
Farah and Todd drive past the sign into the tiny town in episode 2x01 “Space Rabbit”. Amanda and Vogel drive past the sign on their way to the motel in episode 2x03 “Two Broken Fingers”.
Source: What's Filming
Mile Marker 127
Scott Boreton calls the police about the guy he hit with his car and Farah & Tina show up to investigate in episode 2x03 “Two Broken Fingers”. Farah and Tina are driving when they turn around to head to Suzie Boreton's house in episode 2x04 “The House Within a House”.