Blue Mountain House Annex, also known as The Log Hotel, is a historic hotel located on the grounds of the Adirondack Museum at Blue Mountain Lake in Hamilton County, New York, USA.

It was built in 1876 and is a two-story structure built of square-hewn spruce logs with halved log cornering.

It is one of the earliest and best known of the Adirondack resort hotels.

[2] It was added to the National Register of Historic Places in 1977.

This article about a historic property or district in Hamilton County, New York, that is listed on the National Register of Historic Places, is a stub.