The lobby of the main building is designed with a pillarless dome, and there are leisure areas and coffee break areas in the hall. On the outside of the corridor on the second floor, there are portraits of all 60 mathematicians who have won the Fields Medal from 1936 to the present (recently awarded in 2018). Among them, 10 Fields Medal winners have visited TSIMF one or multiple times.The conference hall can also accommodate large conference events.