This is a storied building in suburban Maryland just north of Washington DC. It was built in the 19th century as a summer vacation "retreat" for DC residents, evidently the ones that could afford one back then. Maybe not enough customers showed up so it became a finishing school (!) for women until World War II. After the war, it was repurposed into a quiet retreat for soldiers recovering from injuries. While the grounds are still scenic, the quietness is now gone. Where I was standing with the tripod for this shot, I could turn around and look at Interstate 495 right over some sparse trees, and the traffic noise was non-stop.
The building now houses apartments for the last about 15 years, after some restoration work. There's smaller ancillary buildings in the complex that still need much work, however. One in particular looked in quite bad shape. Several houses near the Seminary building and designed by architect Emily Holman have a unique international influence, including the Japanese pagoda structure I posted a couple days back. I will try to get back to this very interesting location for more pics in a few weeks, including trying a different perspective on the main building itself.