In Beijing, an eccentric resident has attracted the ire of his neighbors with the elaborate rock-like structures he has built to surround his rooftop home. The illegal landscape, consisting of false stone and real plants, has neighbors in the 26-story building worried about the possibility of collapsing ceilings. As a result of rapidly rising property values, the construction of illegal houses on top of apartment buildings has become more common in China. Chinese authorities declared 25 villas built on top of a shopping mall to be illegal earlier this month, after which they became residences for migrant workers.