UPDATE: Maldives authorities are destroying it now (Sep, 2018)

The Coralarium is a 200-ton tidal building filled with sculptures, creating a partially submerged gallery in the Maldives.

British sculptor Jason deCaires Taylor has once again left his mark on the environment with a stunning new installation. Created for the Fairmont Maldives Sirru Fen Fushi, Coralarium is a semi-submerged art gallery filled with nearly 30 sculptures that will act as a habitat for coral and other marine species (via MyModernMet)

The Sculpture Coralarium is situated in the centre of the largest developed coral lagoon in the Maldives, on the island resort of Fairmont Sirru Fen Fushi. The artwork by Jason deCaires Taylor is a semi-submerged tidal gallery space that exhibits a series of sculptural artworks on the skyline, inter-tidal waterline and seabed. As world's first semi submerged tidal Art Gallery it is cube shaped, six metres tall, with its front façade submerged up to median tide of three metres. The design of the walls is based on natural coral structures and is porous to allow the tides, current and marine life to pass through and the structure to “breathe” within its location