The Grand Palace Mosaic Museum, also known as the Istanbul Mosaic Museum, is an impressive mosaic museum located in Arasta Bazaar within the Blue Mosque complex, and being one of the organizational units of the Hagia Sophia Museum Directorate, this museum houses one of the most beautiful mosaic pieces in the world, which have been preserved In the Great Palace of Constantinople during the Eastern Roman period from 610 to 641 AD, the mosaic stones in the museum consist of limestone, pottery and colored stones, and the pictures are placed between the marble pieces.