Tell Brak
Tell Khouweyra

This tell has been the focus of British researchers since Mallowan started the excavations in 1937 (Max Mallowan was, the famous mystery writer Agatha Christie's, husband). Although it was stopped from 1939 to 1976, it has now been continuous since that time and a lot has been discovered about the Early and Middle Bronze Age periods. This site is older than Mari and some of it dates back to the 4th Millennium BC.

Some of the major discoveries up till now are that of the Akkadian fortress, the Eye Temple, and the Mitannian Palace.

The Akkadian fortress was the residence of the Akkadian ruler Naram Sin in the 24th century BC. It was rebuilt by the third Ur dynasty in the 22nd century BC but was abandoned soon after.

The Eye Temple is one of the best features of this excavation site. It dates back to 3200 BC and was named so in reference to the big number of flat idols with an enlarged representation of an eye.

Also uncovered by the British is the Mitannian palace, which dates back to the 16th and 15th centuries BC.

Tell Khallaf
Tell Khallaf is an artificial mound located near the village of Ras Al Ain. This Tell was first found by Baron Max Von Oppenheim a Prussian engineer. He was surveying the area to build the Berlin Baghdad rail track in 1899. He came back to excavate in the region from 1911 to 1913. Many of the vestiges he found were taken back to Berlin to be put in a museum bearing its name, the Tell Khallaf museum.

This site goes back to Neolithic periods in the 4th millennium BC, but was abandoned for a 3 millenniums. In the 1st millennium BC, this was the site of Guzana a city mentioned in Assyrian archives. Guzana was the capital of one of the Aramean states. 

Most of the artifacts found here have been taken away and the large black volcanic lions that are at the entrance to the Aleppo Museum, is a replica of the entrance to this Aramaic Palace.

Tell Aryan
This hill is currently under exploration and not much is known of it except that it is the ancient city of Shadikani (The archaeologist Smith was able to decipher the cuneiform inscriptions found there). A large Assyrian palace has been found here.