What era does Charley believe he has traveled back to on the third level?

Charley believes that he has traveled back to the year 1894 when he discovers the third level at Grand Central Station. He perceives the scene around him to be from a simpler, more peaceful time, with people dressed in 19th-century clothing and the station illuminated by gaslights. Charley is drawn to this era because it represents an escape from the complexities and stresses of modern life. The year 1894 symbolizes for him a nostalgic, idyllic past that he longs to return to, seeking relief from the pressures of the present.

This question related to Chapter 1 English Vistas Class 12th NCERT.
From the Chapter 1. The Third Level.
Give answer according to your understanding.