Our most popular posts this week featured mind-bendings anamorphic illusions painted on the walls of abandoned buildings, a derelict house appearing to slide down into the street, photographs of birds and bats calcified in the waters of a toxic lake and a vacant warehouse transformed into an eclectic campground.
And from around the Web...
Submarine surfaces in the middle of a street in Milan.
Banksy starts a month-long residency in New York.
An image of everyone on Facebook.