To the surprise of very few people, the end of the world didn't happen on May 21, 2011.

Harold Camping's prediction, based on his biblical numerology, turned out to be completely false, and life as we know it has continued throughout the world. Jesus Christ has not returned, and there have been no reports of sizable earthquakes.

Camping put on a $100-million worldwide billboard and advertising campaign to promote his prediction.

The 89-year-old Christian broadcaster also predicted that the world would end in September 1994, but didn't spend quite so much that time around as he did for the May 2011 campaign.

Here's a look at photos of the campaign.