Castlemaine was built in 1886 by George Newman. It then became the summer residence of the Austro-Hungarian ambassador and his wife, the Baron and Baroness Hengelmueler. The Washington heat was too much for the ambassador and his wife, so they summered in Bar Harbor for its cool ocean breezes and lively social life.

Striking architectural details and antique furnishings honor the history of this Bar Harbor landmark. Castlemaine was converted to a B&B in 1981, and was purchased by its present owners, Dan and Dede Daigle, in 2007.

The guest rooms at Castlemaine are spacious, immaculate, luxurious. All have private baths, cable television and up-to-date conveniences to make your stay easy and uncomplicated as well as indulgent and relaxing. Each room and suite is individual and distinct, and many have fireplaces, whirlpool baths and private balconies.