The plenary lectures and some oral presentations (30 years) of ISS2017 are held in the Iino Hall. Other sessions (oral and poster) are held at the rooms in the Iino Conference Center. Iino Hall and Conference Center is located in the forth floor of the Iino Building.
You can use an exclusive-use escalator that goes directly from the 1st floor to the 4th floor. You may also use an elevator that goes directly from the Iino Dining area (B1 floor) to the 4th floor.
