This building paper model is the Mausoleum at Halicarnassus (or Tomb of Mausolus), created by Sabi96. The Mausoleum at Halicarnassus was a tomb built between 353 and 350 BC at Halicarnassus for Mausolus, a satrap in the Persian Empire, and Artemisia II of Caria, who was both his wife and his sister. The structure was designed by the Greek architects Satyros and Pythius of Priene.
The Mausoleum was approximately 45 m (148 ft) in height, and the four sides were adorned with sculptural reliefs, each created by one of four Greek sculptors - Leochares, Bryaxis, Scopas of Paros and Timotheus. The finished structure of the mausoleum was considered to be such an aesthetic triumph that Antipater of Sidon identified it as one of his Seven Wonders of the Ancient World. [Source: wiki]
About the paper model:
You can download the papercraft model template here: The Seven Wonders - Mausoleum at Halicarnassus Free Paper Model Download