Industrial area where Mr. Yin leads the team and captures Juliet in episode #416 "Mr. Yin Presents".
Warehouse where Mr. Yin draws Mary and later the team in episode #416 "Mr. Yin Presents". (I'm fairly certain this is here)
Woody answer's Shawn call in his trailer which is parked in a sketchy industrial area and not the beach in episode #709 "Juliet Wears the Pantsuit".
Barry and Eddie track down their suspect to a brewery and end up chasing him in episode 1x06 "The Flash Is Born".
Oliver uses an abandoned factory belonging to his company as a hideout in pilot episode. From episode 1x03 "Lone Gunmen". From episode 1x18 "Salvation". From episode 3x01 "The Calm". From episode 3x11 "Midnight City". Oliver and Maseo come here to stop China White in a flashback in episode 3x14 "The Return".
Oliver and Tommy are kidnapped and interrogated by masked thugs in an abandoned warehouse in pilot episode.
Oliver enters an abandoned subway station and gets on the train The Savior is performing his broadcasts from in episode 1x18 "Salvation".
Ray Palmer goes to investigate Jake Simmons at a warehouse in episode 3x19 "Broken Arrow".
Oliver attempts to escape and is chased down by Maseo Yamashiro in episode 3x01 "The Calm".
Oliver goes to Count Vertigo's warehouse and attempt to take him down in episode 3x01 "The Calm".
Oliver chases the truck driver through a warehouse and catches him in episode 3x01 "The Calm".
Helena attacks a group of mobsters playing cards in a warehouse in episode 1x08 "Vendetta".
Oliver, Roy, and Diggle go to warehouse only to find the criminals they were searching for were already taken out by another vigilante in episode 3x06 "Guilty".
Warehouse where the shape-shifters shows up at the start of episode #219 "The Man from the Other Side".
Warehouse where Lincoln Lee and Robert Danzig are chasing a shapeshifter at the start of episode #401 "Neither Here Nor There".
Location of The Machine after it has been moved starting in episode #321 "The Last Sam Weiss".
Lydecker calls Logan from his car in this street in episode 2x03 "Proof of Purchase".
John and Frank travel here to investigate Vietnamese funeral parlors in episode 1x02 "Blood Lines".
John chases a suspect to this street who then escapes mysteriously in episode 1x07 "Mind Games".
Police break open the door to this warehouse which then explodes in episode 1x11 "John D.O.A.".
The Devil shows Sam a fight club where a whole group of souls are in episode #201 "A New Hope".