The mausoleum was built between 353-350 BC for Musolos who was the Carian King by his sister Artemisia II of Caria. The Mausoleum was designed by the architect Satyros and Pythuis.
The tomb was around 45 m in height and the four sides were ornated with reliefs and each sides were decorated by four different scolptors. After the tomb was completed, Antipater of Sidon declared it as one of the seven wonders of the world. The tomb was started by Mausolus before he died then contiunied by his sister Artemisa. She invited the most talented sculptors of the time that even Scopas who had supervised the Temple of Artemis at Ephesus came to Halicarnassus (the ancient name of Bodrum).
The tomb was centered in the middle of the structure, stairway flanked by stone lions leading to the top, at the each corner, stone warriors mounted on horseback to guard the tomb.
It is unkown when and how the Mausoleum came to ruin and maybe the eartquakes damaged it or the following civilizations used or recycled the Stones throughout the history.
You can book the Bodrum City Tour with Romos Travel.