Fort Zachary Taylor, located in Key West, Florida, is a historic military fort that played a significant role in defending the southeastern coastline of the United States. While the fort itself is not known for having "strategic walls" in the conventional sense, it does have defensive features that were strategically designed to protect the harbor. Here's an overview:

1. **Masonry Walls:**
   - The fort is constructed with masonry walls made of brick and coral rock. These walls were built to withstand attacks and provide a solid defense against potential invasions.

2. **Bastions and Defensive Structures:**
   - Fort Zachary Taylor features bastions, which are projecting structures on the corners of the fort. Bastions were strategically designed to provide additional defensive positions, allowing cannons to cover a wide range and creating angles for crossfire.

3. **Moat and Drawbridge:**
   - The fort was surrounded by a moat, adding an extra layer of defense. A drawbridge allowed controlled access to the fort, and in times of danger, it could be raised to prevent entry.

4. **Artillery Platforms:**
   - The fort's design includes elevated platforms for artillery placement. These platforms provided strategic vantage points for cannons, allowing them to cover key approaches and protect against potential threats from the sea.

5. **Parapets and Embrasures:**
   - Parapets are protective walls or earthworks on the fort's roof, providing cover for defenders. Embrasures are openings in these walls that allowed cannons to be fired from a protected position.

6. **Seaward Walls:**
   - Given its coastal location, the seaward walls of Fort Zachary Taylor faced the ocean. The fort's strategic placement allowed it to control access to the harbor and defend against maritime threats.

7. **Coastal Defense Strategy:**
   - Fort Zachary Taylor was strategically positioned to protect Key West Harbor and the broader coastline. Its defensive features were designed to deter potential attackers and provide a formidable line of defense against naval and land-based assaults.

8. **Civil War Modifications:**
   - During the Civil War, the fort underwent modifications to enhance its defensive capabilities. Additional structures and defensive measures were implemented to align with the changing nature of warfare during that period.

Today, visitors to Fort Zachary Taylor State Park can explore the historic fort, walk along its walls, and gain insights into its strategic design. The well-preserved architectural features offer a glimpse into the military strategies employed to safeguard this strategic outpost in the 19th century.