Palm Beach, town (1990 pop. 9,814), Palm Beach co., SE Fla., on a barrier beach between the Atlantic Ocean and Lake Worth (a lagoon); inc. 1911. It is a well-known resort of the wealthy, with many fine estates, luxurious hotels, and yachting facilities. In the winter its population expands to much larger numbers. The town was settled during the 1870s, but not until the arrival (1893) of developer Henry M. Flagler in Florida did Palm Beach grow rapidly. Of interest are the Henry Morrison Flagler Museum, the Cluett Memorial Gardens, and the Four Arts Gardens.