An eccentric Beijing resident has built a huge house among what looks like a pile of rocks dotted with trees on top of a 26-storey apartment block in the capital, reports said Monday.

Neighbours have complained about China’s latest architectural oddity, which covers more than 1,000 square metres (10,000 sq ft), saying they fear it could cause the structure to collapse on top of them.

The rocks, said to be imitation shells rather than solid stone, have trees and bushes growing among them, as in classical Chinese landscape painting.

Poking out from between them, sections of the house underneath can be seen — a blue-framed window here, a balcony under a curved roof there. At least two neighbours have moved out because of the construction work, which has been going on for years, the paper said.