An island in this city’s harbor was the site of an unfinished palace called the Timonium. This city’s gymnasium was located in a quarter called the Brucheion (“broo-kay-ON”), which also contained a building inscribed with the words “The place of the cure of the soul.” During a war in this city, one commander captured two bridges on either side of a causeway called the Heptastadion. Pliny the Elder dubiously (15[1])claimed one structure in this city was (-5[1])built by the architect (-5[1])(*) Sostratus. The Pinakes (“pin-AH-keys”) was a compilation by Callimachus of all the items in one building in the city. The Earth’s circumference was calculated by Eratosthenes (10[1])from an institution in this city that was (10[1])significantly damaged by fires set by the forces of Julius Caesar. For 10 points, name this capital city of Ptolemaic Egypt, once home to a large lighthouse and great library. (10[1])■END■