The 34th Parallel North is a circle of latitude that is 34 degrees north of the Earth's equatorial plane. It runs through several countries, including the United States, Spain, and Japan. This parallel is significant in geography and climate, as it often marks the boundary between different climate zones. In the United States, the 34th Parallel North crosses through states like California, Arizona, and New Mexico. It is also notable for its proximity to major cities such as Los Angeles and Phoenix. The parallel serves as a reference point for navigation and mapping across various regions.