A vestige of a bygone era.

Meaning

A remaining trace of something from the past.

Examples

• John: That old building seems out of place here.
• Alice: It's <b>a vestige of a bygone era</b>, a remnant from the Victorian period.
• John: Interesting. So it's essentially <b>a vestige of a bygone era</b>, showing architectural styles of the past.
• Alice: Exactly. A unique piece of history.