Say the phrase “Cape Cod house,” and most people picture a quaint, grey-shingled cottage. But deep in the woods of Wellfleet, a group of outliers defy that stereotype. These are modern homes built by a group of bohemian designers who gravitated to the area in the 1930s and 40s and pioneered the school of modern architecture. Several of these houses have been restored by the Cape Cod Modern House Trust, which offers tours of the homes during summer. “A group of American self-taught architects