21st Street is a common street name found in many cities across the United States. It typically runs parallel to other numbered streets, forming part of a grid system that helps with navigation. Streets like 21st Street often host a variety of businesses, residences, and public spaces, contributing to the local community's character. In some cities, 21st Street may be known for specific landmarks or cultural significance. For example, it could feature parks, restaurants, or historical sites that attract both locals and visitors. The street's name reflects the urban planning style that organizes city layouts for easier access and orientation.