The Palm Beach Post's Staci Sturrock came out with an article last March about historic structures in Palm Beach County's past that are no longer with us. Some were included on the National Register of Historic Places, which shows placement on that list is not a guarantee against demolition. The number one example is the Brelsford House. I believe it was this family that deeded the land for the Lake Worth beach.
Missing from the list are properties like the grand Pennsylvania Hotel that stood on West Palm Beach's waterfront for years until replaced by a high-rise retirement home, along with nearly all of the largest Palm Beach estates.
Here is the latest excerpt in the series on the history of the Gulf Stream Hotel that appears in the Coastal Observer: