“The tomb was erected on a hill overlooking the city. A stairway flanked by stone lions led to the top of the platform, which bore along its outer walls many statues of gods and goddesses.”
(Unknown Author)

“The one [tomb] at Halicarnassus was made for Mausolus, king of the city, and it is of such vast size, and so notable for all its ornament, that the Romans in their great admiration of it call remarkable tombs in their country - Mausolea”
(Pausanias, CE 170, Description of Greece, Book VIII, 16)

“The building was rectangular, not square, surrounded by a colonnade of thirty-six columns. There was a pyramidal superstructure receding in twenty four steps to the summit.”
(Pliny the Elder, The Natural History, Book XXXVI, 30-31)