Xerxes I is notable in Western history for his failed invasion of Greece in 480 BC. His forces temporarily overran mainland Greece north of the Isthmus of Corinth until losses at Salamis and Plataea a year later reversed these gains and ended the second invasion decisively. However, Xerxes successfully crushed revolts in Egypt and Babylon. Roman Ghirshman says that, "After this he ceased to use the title of 'king of Babylon', calling himself simply 'king of the Persians and the Medes'." Xerxes also oversaw the completion of various construction projects at Susa and Persepolis.