Viggo Mortensen was 43 in The Lord of the Rings: The Two Towers when he played the character 'Aragorn'.
That was over 21 years ago in 2002.
Today he is 65, and has starred in 72 movies in total, 31 of those since The Lord of the Rings: The Two Towers was released.
In The Lord of the Rings: The Two Towers, I think Viggo Mortensen looks: