Foundation tablets bearing Atlanersa's name show that he started a temple dedicated to the syncretic god Osiris-Dedwen at Jebel Barkal, now known as B700.
The choice for this location followed from its closeness to the "Pure Mountain"—the ancient name of Jebel Barkal—and the presence of a small New Kingdom chapel there.
It is unclear whether Atlanersa ordered the destruction of this chapel to make place for B700, or whether the chapel was already ruined by this time.

The temple, now ruined, was entered through a pylon and comprised a small court followed by an inner sanctuary.
The court and sanctuary both had four columns, with palm capitals and papyrus flower bundle capitals, respectively.
The inner sanctuary was inscribed with a lengthy hymn to Osiris, possibly indirectly referring to the deceased Taharqa.
The walls were further decorated with reliefs depicting the activities performed during the coronation of the king, almost all of which have now disappeared.
Beneath two of the corners of the inner room were two foundation deposits buried at the start of the temple construction, notably with the tablets showing Atlanersa's name.
A stand for a sacred barque stood at the centre of the sanctuary.
The stand is made of a single block of granite weighing over 8 t (8.8 short tons).
The purpose of the stand was to support the barque of the god Amun of Napata when it visited the temple from the nearby Temple B500.

Atlanersa's name was present on a scene inscribed on the front pylon of the temple, now destroyed.
The decoration of the pylon was predominantly made during Senkamanisken's reign, yet it depicted queens Yeturow, K[...] and Khaliset, who are implied to be both Atlanersa's wives as well as his sisters.
Finally,  Atlanersa's name is written on a granite altar from the same temple.

The progression of the temple construction suggests that Atlanersa died unexpectedly, shortly after completing the construction works and the decoration of the two interior rooms—as attested by the presence of his name there—but before completing the decoration of the exterior.
This task was finished under Senkamanisken who added inscriptions of his own on the columns and front pylon, and donated a small obelisk.
A colossal statue of Atlanersa was placed on the western side of the temple entrance, where it was discovered by Reisner, albeit toppled with its head cut-off.
It is now in the National Museum of Sudan.

Reliefs on the barque stand and on the sanctuary walls show Atlanersa holding up the heavens and performing the ceremony of uniting the two lands, originally solely a part of the coronation of Egyptian pharaohs but subsequently an integral part of the Kushite royal legitimation.
Thus, Atlanersa ruled at a pivotal time which saw the cultural integration of Egyptian concepts and institutional continuity between the 25th Dynasty state and the subsequent Napatan kingdom of Kush.
This further indicates that, originally, the temple's importance lay in its role during the accession of a king to the throne: following the death of his predecessor, the king went to the temple "in order to be confirmed in his new role by Amun and giving the office of kingship renewed life".
After Senkamanisken's rule, the temple might have served as a mortuary temple for Atlanersa and, even later, for all deceased Kushite kings.
Foundation tablets bearing Atlanersa's name show that he started a temple dedicated to the syncretic god Osiris-Dedwen at Jebel Barkal, now known as B700. The choice for this location followed from its closeness to the "Pure Mountain"—the ancient name of Jebel Barkal—and the presence of a small New Kingdom chapel there. It is unclear whether Atlanersa ordered the destruction of this chapel to make place for B700, or whether the chapel was already ruined by this time.
The temple, now ruined, was entered through a pylon and comprised a small court followed by an inner sanctuary. The court and sanctuary both had four columns, with palm capitals and papyrus flower bundle capitals, respectively. The inner sanctuary was inscribed with a lengthy hymn to Osiris, possibly indirectly referring to the deceased Taharqa. The walls were further decorated with reliefs depicting the activities performed during the coronation of the king, almost all of which have now disappeared. Beneath two of the corners of the inner room were two foundation deposits buried at the start of the temple construction, notably with the tablets showing Atlanersa's name. A stand for a sacred barque stood at the centre of the sanctuary. The stand is made of a single block of granite weighing over 8 t (8.8 short tons). The purpose of the stand was to support the barque of the god Amun of Napata when it visited the temple from the nearby Temple B500.
Atlanersa's name was present on a scene inscribed on the front pylon of the temple, now destroyed. The decoration of the pylon was predominantly made during Senkamanisken's reign, yet it depicted queens Yeturow, K[...] and Khaliset, who are implied to be both Atlanersa's wives as well as his sisters. Finally,  Atlanersa's name is written on a granite altar from the same temple.
The progression of the temple construction suggests that Atlanersa died unexpectedly, shortly after completing the construction works and the decoration of the two interior rooms—as attested by the presence of his name there—but before completing the decoration of the exterior. This task was finished under Senkamanisken who added inscriptions of his own on the columns and front pylon, and donated a small obelisk. A colossal statue of Atlanersa was placed on the western side of the temple entrance, where it was discovered by Reisner, albeit toppled with its head cut-off. It is now in the National Museum of Sudan.
Reliefs on the barque stand and on the sanctuary walls show Atlanersa holding up the heavens and performing the ceremony of uniting the two lands, originally solely a part of the coronation of Egyptian pharaohs but subsequently an integral part of the Kushite royal legitimation. Thus, Atlanersa ruled at a pivotal time which saw the cultural integration of Egyptian concepts and institutional continuity between the 25th Dynasty state and the subsequent Napatan kingdom of Kush. This further indicates that, originally, the temple's importance lay in its role during the accession of a king to the throne: following the death of his predecessor, the king went to the temple "in order to be confirmed in his new role by Amun and giving the office of kingship renewed life". After Senkamanisken's rule, the temple might have served as a mortuary temple for Atlanersa and, even later, for all deceased Kushite kings.
Atlanersa