Apollo 11 was end of a long phase of the manned space program being about developing capability. From Apollo 12 onwards, the program was about exploration rather than developing the capability for exploration.
But can we generalise this an say Apollo 12 was the start of NASA great age of exploration that still continues to this day?
I know there were a few Mariners prior to Apollo 12 and of course the trail blazing Moon stuff, but even Mariner 9, the first spacecraft to orbit another planet, post-dates Apollo 12.