Three musketeers by Dumas, though somewhat unhistorical, are good but you should also read the sequels- twenty years after, the vicomte de bragalonne(sorry for spelling), Louise de la valliere and the man in the iron mask.

I also enjoy sir Walter scott's historical fiction and when I was younger I enjoyed G A Henty's books.

if you're looking for real history than Tacitus' books-Germania, and annals, and Cicero's commentaries, letters and other stuff are quite interesting.

general aetius