Sometimes being a geek, nerd or just different pays off, like this makeover of the Astor Place Cube on the island of Manhattan in New York City, to many of the passers by, it would probably mean nothing but to the rest of us we know that this is a Portal Prank.
Just for those who do not know, this is in fact a weighted companion cube, where you go, it goes in the testing chamber anyway! So what is it doing in New York? Well the pranksters were thoughtful enough to leave a letter that tells us and we have an image of that too, read at your leisure.
Source [Geeks Are Sexy]