You like such books ?
Then you'll love "Man's Fate" by André Malraux.
And once you'll be done with this one, you can grab "The Hope", by the same author.
Personally I don't have much time to read these days ; the last "big" thing I read was Da Vinci Code, and I was very disappointed. It's a pageturner with short chapters and a fast story, with zero depth at all, which is a shame for a subject of such importance. IMO "The Name of the Rose" by Umberto Eco is MUCH better.