Nainonseubeoge Seoul 500-dongjeom is a burger restaurant on the first floor of Building 500 at Seoul National University. The Nainonseubeoge set comes with two patties, and the menu also includes Avocado California and Hali Chili with chili sauce. Because it is inside the building, you can eat there without leaving Seoul National University. Milkshakes are also available, and prices are on the higher side.