rationalskepticism.org

It is obvious that whoever commisioned these to be put up wants everybody in the woo-woo land to think he/she is or has connections to the Rosicrucians. As to if that's really the case or not is unknown since we don't know who actually was behind this. Maybe someday we will, and possibly also find out if it is meant as a serious statement or something else.

My conspiracy theory: it's expensive viral marketing for some movie/tv-show/other-entertainment project that never materialized