The Gramberg Ranch, in Pennington County, South Dakota near Hermosa, was listed on the National Register of Historic Places in 1999.

[1] The main house is a two-story, square plan, hipped roof structure started in 1885; it was further developed in years up to 1936.

It is a common bond brick building on a brick foundation.

[2] Other buildings and structures include: The general ranch landscape is also considered a resource in the listing.

This article about a property in South Dakota on the National Register of Historic Places is a stub.