Not tracked this very well but from the now and then updates that Hilton sent via emails...most nights in Hiltons, back in 2019 stayed in 84 cities with the Hilton chain, I believe that is now around 100 cities, and roughly 140 properties in total, it was 115 from another Hilton email but again a couple years ago. Depending on point of view/education system, 4 of 5 continents or 5 of 7 continents, Australia is my missing one). Nowhere near lifetime diamond but enjoying the travel and chain (and differences) globally!