At Cape Adare, there are two huts that belonged to Carsten Borchgrevink. He sailed for six months to Cape Adare from London, England, in 1898/1899. After helping to build the huts (an "accommodation" hut and a "stores" hut), his ship departed for New Zealand -- leaving Borchgrevink, along with 9 other men and 90 dogs, to become the first humans to spend the lonely winter in Antarctica.
A third hut at Cape Adare was built by Victor Campbell, who was a part of Robert Falcon Scott's Terra Nova expedition of 1911-1914. It is a ruin and basically there is not much left of it at this point.