Construction works on the pyramid of Neferefre had just begun when Neferefre died unexpectedly in his early twenties.
At the time of Nyuserre's ascension to the throne, only one step of the core of Neferefre's pyramid had been completed.
The substructures, built in a large open pit at the center of the pyramid were possibly unfinished as well.
Nyuserre hastily completed the pyramid by transforming it into a stylised primeval mound resembling a mastaba: the walls of the core layer already in place were covered with limestone and the top was filled with clay and stones drawn from the local desert.

The accompanying mortuary temple, which then comprised only a small stone chapel possibly built by the ephemeral Shepseskare, was finished by Nyuserre.
Extending over the whole 65 m (213 ft) length of the pyramid side, the temple was built of mudbrick and comprised the earliest hypostyle hall of Ancient Egypt, its roof supported by wooden columns.
The hall housed a large wooden statue of the deceased king.
Nyuserre also built storage rooms to the north of the hall and, east of it, the "Sanctuary of the Knife" where animals were ritually slaughtered.
A column courtyard completed the temple entrance, adorned with two stone columns and 24 wooden ones.
Construction works on the pyramid of Neferefre had just begun when Neferefre died unexpectedly in his early twenties. At the time of Nyuserre's ascension to the throne, only one step of the core of Neferefre's pyramid had been completed. The substructures, built in a large open pit at the center of the pyramid were possibly unfinished as well. Nyuserre hastily completed the pyramid by transforming it into a stylised primeval mound resembling a mastaba: the walls of the core layer already in place were covered with limestone and the top was filled with clay and stones drawn from the local desert.
The accompanying mortuary temple, which then comprised only a small stone chapel possibly built by the ephemeral Shepseskare, was finished by Nyuserre. Extending over the whole 65 m (213 ft) length of the pyramid side, the temple was built of mudbrick and comprised the earliest hypostyle hall of Ancient Egypt, its roof supported by wooden columns. The hall housed a large wooden statue of the deceased king. Nyuserre also built storage rooms to the north of the hall and, east of it, the "Sanctuary of the Knife" where animals were ritually slaughtered. A column courtyard completed the temple entrance, adorned with two stone columns and 24 wooden ones.
Nyuserre Ini