Map and Direction to LIDS For directions to MIT, please click on "How to get to MIT". Laboratory for Information and Decision Systems is located in MIT's Building 32, which is at the junction of Vassar Street and Main Street. The maps below show where Building 32 (highlighted) is located. The best entrance to use to reach the Dreyfoos Tower is the entrance on Vassar Street just next to Building 36. LIDS is on the 5th, 6th and 7th floors of Building 32.