Since 1987, illustrator Martin Handford's Where's Waldo?
in the UK) books have challenged the pattern recognition skills of children and adults. In the many books featuring Waldo, Handford has occasionally hidden strange if not a touch scandalous images. Adrian Beiting of of the geekery blog Topless Robot
has compiled nine of the oddities, such as an Aztec human sacrifice:Link
| Images: Chadwick House Publishing