Caravan Kingdoms: Yemen and the Ancient Incense Trade.

• Position: The World Yesterday

NUMEROUS PIECES OF extraordinary art take center stage in the exhibition "Caravan Kingdoms: Yemen and the Ancient Incense Trade." Located on the Gulf of Aden at the south of the Arabian Peninsula and bordering the Arabian and Red Seas, this region once played a central role in an ancient "global economy" that extended from the Mediterranean Sea to the Indian Ocean.

During a 1,400-year period between the eighth century B.C. and the sixth century A.D., the southern Arabian kingdoms of Saba (biblical Sheba), Qataban, and Himyar were home to sophisticated civilizations that flourished through their control of the trade in frankincense and myrrh. Now best-known as the Gifts of the Magi, these valuable resins were harvested from bushes native to the region and were essential ingredients for court and temple ceremonies and in the spice markets and perfume industries of the Near East and Mediterranean worlds.

"Caravan Kingdoms" brings together for the first time in North America 129 archaeological objects to tell the story of these little-known, wealthy caravan kingdoms, examining the monumental structures, distinctive stone funerary sculptures, elaborately carved inscriptions, and sophisticated metalwork that have been unearthed there since the mid 20th century.

Dominated by the great interior desert known as the Ramlat as-Sabatyn, Yemen's four major valleys were occupied during this period by sophisticated states, which constructed complex irrigation systems and built imposing palaces and temples. These kingdoms competed for control over the lucrative overland caravan and later maritime trade routes to the Mediterranean coast and the western shores of the Persian Gulf.

During this time, multiple burials and cave tombs often contained miniature offerings; examples included in the exhibition are tiny vessels, incense burners, and altars. Bulls and...