PUBLIC MARKS with tag infrared

The PF can help you to see perfectly through sunglasses and dark, tinted car windows.

Infrared-ray communication between individual and groups.

The world is filled with structures, some forgotten and others well-loved. What stories do these buildings have to tell, what scenes have these stones witnessed? Why is the human race so obsessed with erecting these monuments of metal and brick - and why do they so carelessly abandon them when they are no longer needed?