The World's Greatest Detective turns 75 today.

D-C Comics declaring today as "Batman Day" celebrating the 75th anniversary of the Caped Crusader's creation by artist Bob Kane in 1939.

To mark the day, D-C is offering discounted prices on hundreds of Batman comics.

Check out more on DC Comics celebrating Batman Day by clicking here.

(Photo: FRANCOIS GUILLOT / 2012 AFP)