Question

what strange things did Charlie see at the station on the Third Level​

Answer 1

After becoming late in his office, Charley went to Grand Central to reach home early. ... Charley went on walking and reached a flight of stairs that took him to another level of the station. It was the Third Level even quite different from other two levels.

Answer 2

Everything was considered unusual at the third level for Charlie. The room was smaller. There were some ticket windowpanes. The lights were shadowy and flickering because they were open-flame gas-lights. There were alloy spittoons on the grounds. The third level was remarkably a means of escape for Charlie who was also a sufferer of the stressful life of the contemporary age.