Answer
After Hephaestion's death, Alexander was deeply saddened and mourned for him. He also made plans to build a great city in Hephaestion's honor, but this was never completed. Instead, Alexander took Hephaestion's ashes to Babylon and buried them there. This act was seen as a sign of Alexander's love and respect for Hephaestion, and it helped to cement their friendship in the minds of the people.