WASHINGTON, D.C. –  The exhibition The Greeks: Agamemnon to Alexander the Great, at the National Geographic Museum is different from the typical variety of such presentations, the Washington Post reports.

First, there is the chronological range of the artifacts, with some estimated to be over 7000 years old, the Post writes.

Also, the sheer size of the display, the Post writes, 560 items, is the largest in the United States in decades.

Another rather unique aspect of the exhibit is that none of the artifacts are from American collections – they were borrowed from 22 Greek museums, the Post notes.

“The show is arranged chronologically,” writes the Post, “culminating with artifacts of Alexander and his father, Philip II. The Macedonian king is represented by a gold-and-silver diadem discovered just 25 years ago. It is believed to have been on Philip’s head the day he was assassinated in 336 BC.”

In addition to the physical display, there are audio and video accompaniments by National Geographic describing the event and providing historical background, as well as narrations in the voices of universally-known Ancient Greek figures, such as Plato and Aristotle.