LeBron James -- Bigger Than Ancient Roman

Pop quiz: LeBron James or temples built for kings -- which would you photograph? Yeah, LBJ wins every time ... at least in Rome.

Newlywed LeBron and his wife are honeymooning over in Rome and yesterday while he was busy taking pics in front of the Altare della Patria -- all the tourists were busy snapping pics of the NBA champ.

At only 6'8" ... King James towers over the nearly 100-year-old monument to King Victor Emmanuel II (yes, we looked it up.)

For his part ... LBJ was clearly impressed by the landmark. So much so, he busted out some dance moves. Go 'Bron! Go 'Bron!!