Yonsei University Severance Building is an office building connected directly to Seoul Station, housing various organizations and companies. The basement restaurants are crowded from 11:30 AM to 12:10 PM, and there is a convenience store on the first basement floor. Elevators are divided between low floors and high floors, so you need to check the floor, and the lobby is clean with fast operation. Parking fees are expensive, making long-term parking a significant burden.