Where only recently there were virgin beaches, now mile upon mile of concrete vacation complexes line the strand until you reach El-Alamein, a 90-minute drive along the coast.
The only type of structures by the stand are vacation complexes. 
mnli hypothesis: The only type of structures by the stand are vacation complexes.  premise: Where only recently there were virgin beaches, now mile upon mile of concrete vacation complexes line the strand until you reach El-Alamein, a 90-minute drive along the coast.