sentences:  Today, the massive castle of the Knights Hospitaller (Knights of St. John) still stands in Bodrum, and the polished stone and marble blocks of the Mausoleum can be spotted built into the walls of the structure.At the site of the Mausoleum, only the foundation remains, and a small museum.Some of the surviving sculptures at the British Museum include fragments of statues and many slabs of the frieze showing the battle between the Greeks and the Amazons.