Act 2
Sc. 1: Cleopatra's terraces connecting with the reception halls
Sc. 2: A room in the seraglio at Ptolemaeus
Act 3
Sc. 1: A plain by the sea at Alexandria
Sc. 2: The interior of Ptolemaeus' tent in his field camp
Sc. 3: A plain by the Nile (as Act 1, Sc. 1)