Age-old (adjective)

Very old and having existed for a long time.

Origin:

Early 19th century: from age + old.

Examples:

1. The city is home to age-old architecture and cultural landmarks.
2. The age-old tradition of storytelling continues to captivate audiences.
3. This age-old problem has yet to be solved.
4. The age-old question of the existence of life on other planets still intrigues scientists.
5. The age-old argument between science and religion continues to persist.