The European Hackberry (Celtis australis) is a tree species that also goes by the names European Nettle tree and Lote tree and is possibly the tree that the "Lotus-eaters" ate from as referenced by Homer.
The large specimen of the Celtis australis in the picture below is located in the "Concepción" historical botanical garden in Malaga, Spain at the beginning of the "Around the World in 80 trees" trail.
The fruit of the European hHackberry is a small berry like "drupe" that hangs on the end of a short stem connected to the base of the leaf stem. The size of the fruit is about one half inch in diameter.
Below is another view of the large tree (image above) from a different angle.
The leaf of the Celtis australis is simple in shape with serrate margins and measures about 2-3 inches long. The top side is a darker green than the bottom side which is also "fuzzier" also.
The bark is light gray and with age develops interesting shapes. One of the shapes in the picture below looks a bit like an eye.
I found another large example of the European Hackberry tree on the grounds of the Cathedral of Málaga. From the size of its trunk it looks like it has been growing there for a rather long time.