What Egyptian city did Alexander the Great found?

Alexander the Great founded the Egyptian city of Alexandria in 331 BC.

Alexander established Alexandria on Egypt’s Mediterranean coast after conquering the country from the Persian Empire. The site lay near the earlier Egyptian settlement of Rhacotis, between the Mediterranean and Lake Mareotis. Its position offered access to the Nile Valley, maritime trade routes, and a planned harbour facing the island of Pharos.

The city was laid out according to a grid plan traditionally associated with the architect Dinocrates of Rhodes. Alexander left Egypt only a few months after the foundation and never returned, so his viceroy Cleomenes continued the city’s development. After Alexander’s death, Alexandria became the capital of the Ptolemaic Kingdom under his successor Ptolemy I.

Alexandria eventually became one of the greatest intellectual and commercial centres of the ancient Mediterranean. It was home to the famous Library of Alexandria and the Pharos lighthouse, one of the Seven Wonders of the Ancient World. Memphis, Thebes, and Cairo were important Egyptian cities, but they were not the city founded by Alexander in this question.