The Cox building is adjacent to the Blake building at MGH main campus. Once you get to the main entrance, walk straight towards Coffee Central then make a left turn towards the Chapel and finally make a right turn just after the Gift Shop and walk down the hallway to the Cox Lobby. Also look out for directions in the hallways above eye level. Alternatively, you can find the entrance to the Cox building to the left on Blossom Street when heading towards Charles Street.
Go throw main holway to end and Cox bilding will be on left site and you also can see the errow idacation.
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