This is whatever was at the intersection of Route 7 (Leesburg Pike) and Towlston Road, McLean, VA 22102. Toll Brothers developed this land into the Arden community circa 2020 (marketed as Great Falls).

I think this was the old Hazelton Laboratories/Comanche which was demolished in the late 1990s. It was vacant until recently when homes were built in about 2020.

This is Hazleton Laboratories. Lloyd Hazleton started the lab in the 1950s and it grew over the years before it closed in 2010. Property was sold about 2012 or so and now mega mansions have been built.