Here is a bit more background on the mysterious city from wikipedia:

Starting out as a seasonal settlement, Timbuktu became a permanent settlement early in the 12th century. After a shift in trading routes, Timbuktu flourished from the trade in salt, gold, ivory and slaves. It became part of the Mali Empire early in the 14th century. In the first half of the 15th century the Tuareg tribes took control of the city for a short period until the expanding Songhai Empire absorbed the city in 1468. A Moroccan army defeated the Songhai in 1591, and made Timbuktu, rather than Gao, their capital.

The invaders established a new ruling class, the arma, who after 1612 became virtually independent of Morocco. However, the golden age of the city was over and it entered a long period of decline. Different tribes governed until the French took over in 1893, a situation that lasted until it became part of the currentRepublic of Mali in 1960. Presently, Timbuktu is impoverished and suffers from desertification.

What do you think is the history of this place accurately documented?  Are there other unusual artifacts to be found in this place?