"Mile Zero" in Key West refers to the southernmost point in the continental United States, and it is a significant landmark and tourist attraction. Here's an overview of Mile Zero in Key West:

**1. Southernmost Point Marker:**
   - The Southernmost Point is marked by a large, brightly painted buoy that serves as a landmark and photo opportunity for visitors. The buoy is decorated with colorful bands and reads "Southernmost Point Continental U.S.A., Key West, Florida."

**2. Geographic Significance:**
   - Mile Zero holds geographic significance as it marks the end of U.S. Highway 1, which stretches from Fort Kent, Maine, to Key West. The distance is often measured in miles, with Key West being the starting point or "mile zero."

**3. Popular Photo Spot:**
   - The Southernmost Point buoy is one of the most photographed spots in Key West. Visitors often line up to take pictures next to the buoy, capturing the moment of being at the southernmost point of the continental United States.

**4. Historic Marker:**
   - In addition to the buoy, there is a concrete marker nearby that provides information about the Southernmost Point's significance and its position as the starting point of U.S. Highway 1.

**5. Located in Historic Old Town:**
   - Mile Zero is situated in the historic Old Town area of Key West, near the famous Duval Street. The location allows visitors to explore the vibrant streets, charming architecture, and various attractions in the vicinity.

**6. Proximity to the Atlantic Ocean and Gulf of Mexico:**
   - The Southernmost Point is located at the convergence of the Atlantic Ocean and the Gulf of Mexico. The surrounding area offers beautiful views of the ocean, making it a picturesque and serene location.

**7. Symbolic Starting Point:**
   - For many travelers, reaching Mile Zero in Key West symbolizes the completion of a long journey along U.S. Highway 1 or the accomplishment of a road trip from the northernmost point to the southernmost point of the continental United States.

**8. Nearby Attractions:**
   - While at Mile Zero, visitors can explore nearby attractions such as the Key West Butterfly and Nature Conservatory, Fort Zachary Taylor Historic State Park, and the Ernest Hemingway Home and Museum.

**9. Festivities and Celebrations:**
   - The Southernmost Point is sometimes used as a focal point for festivities and celebrations, especially during special events or holidays. It's a gathering place for locals and tourists alike.

**10. Sunset Celebration:**
   - The nearby Mallory Square is famous for its nightly Sunset Celebration, where locals and visitors gather to enjoy street performers, artists, and vendors as the sun sets over the Gulf of Mexico.

Mile Zero in Key West is not just a geographical marker; it's a symbol of the southernmost point of the continental United States and a popular destination that attracts visitors seeking both historical significance and scenic beauty.