John Langdon’s Ambigrams

Dan Brown, author of "The Da Vinci Code" has just released a new book "The Secret of Secrets". Did you know that the hero symbology professor Robert Langdon is named after a guy who designs ambigrams?

Ambigrams are a form of typographical art that, by virtue of specially designed letterforms, can be read from multiple perspectives, orientations or directions.

They are exercises in graphic design that play with optical illusions, symmetry and visual perception. There are several categories of ambigram, the best known of which are 180º rotational ambigr…