Kurumi's Field Guide to Interchanges (Popularity: ): Descriptions and diagrams of many types. California Freeway Interchanges (Popularity: ): Photos. Museum of Dumb Highway Design (Popularity: ): Aerial photos of and commentary on various interchanges which the author finds unusual or substandard. The Echelon Interchange (Popularity: ): Professional paper on this part-at-grade, part-grade-separated intersection. Interchange of the Week (Popularity: ): Detailed entries for locations in New York State, using official state aerial photography. Michigan Left Turn (Popularity: ): Describes how this unusual intersection feature works, including history. Unusual Interchanges (Popularity: ): Diagrams and commentary of various ones in the East-Central U.S. Highway Feature of the Week (Popularity: ): Large archive of maps and descriptions of unusual or complicated facilities, primarily in the United States. WhereRoadsMeet (Popularity: ): Contains aerial photographs and descriptions of unusual or complicated facilities in the United States. Images of Britain - Spaghetti Junction (Popularity: ): The M6 at the A38(M) in Birmingham.