![Map of AN Bourns Science Building (ABB). Description available below.](https://sis.mcmaster.ca/app/uploads/2023/03/SIS_Wayfinding_Map_002-819x1024.jpg)
- Enter through ABB Lobby
- Walk through the undergraduate Chemistry Wing hallway past the labs towards ABB C.
- Go through the double doors at the end of the hallway to enter the ABB C Elevator Lobby.
- These elevators will take you to the 5th floor and ABB C501.