And it seems that vandals are always on their trail, making minor alterations to their official signs.
In 2013, someone stuck the word “PRAY” to their post:
International Darwin Day celebrates the birth of Charles Darwin (February 12, 1809) by encouraging groups to put on lectures or events educating others about evolution. More generally, the purpose is:
… to inspire people throughout the globe to reflect and act on the principles of intellectual bravery, perpetual curiosity, scientific thinking, and hunger for truth as embodied in Charles Darwin.
Today, they’re relaunching Darwin Day with a new website and logo: