The Kingdom of Kush was dissolved by the mid-sixth century CE. More than 255 pyramids erected over four royal pyramid field sites in Nubia have been identified by archaeologists (El-Kurru, Nuri, Meroe, and Jebel Barkal or Gebel Barkal). Some source indicate that these were built by different kings, but most agree that they were constructed under the leadership of a single ruler who is now known as Tausret. Tausret is believed to have been a powerful king who ruled from about 690 to 656 BCE. He is credited with bringing peace to his kingdom for a period of 20 years, during which time he built many structures including pyramids. However, he was later defeated by another king named Taharqa who invaded the country from Syria. After defeating Tausret, Taharqa continued on to defeat other rulers of the kingdom of Kush one by one. In 656 BCE, Taharqa captured Meroe where the capital city of the kingdom was located and destroyed it. This ended the rule of the Kings of Kush for good. So, yes, Kush built pyramids.