Philadelphia, USA. 8th Oct 2018. Inflatable tentacles of a temporary art installation, titled Navy Yard Sea Monster, by British artist Pedro Estrellas and Filthy Luker appear to emerge from an old warehouse in Philadelphia, Pennsylvania, on October 8, 2018. The art work is commissioned by Philadelphia Industrial Development Corporation to promote the redevelopment of Philadelphia Navy Yard. Credit: PhotograPHL/Alamy Live News - Stock Image