Phet Fortress is the most important fortress among the 29 forts that once surrounded Ayutthaya Island. It was constructed during the reign of King Maha Thammaracha to defend the southern approach to the capital, a strategically vital area for water transportation. The fort stands at the confluence of the Chao Phraya, Pa Sak, and Lopburi Rivers, making it the first checkpoint that merchant vessels, royal barges, and foreign fleets had to pass before entering the heart of the ancient capital.

The structure of Phet Fortress reflects advanced military engineering of the Ayutthaya period. It was built using alternating layers of brick and laterite, with walls reaching approximately 6.5 meters in thickness, enabling the fort to withstand both strong river currents and heavy attacks from enemy weapons such as cannons mounted on warships. This massive construction demonstrates Ayutthaya’s deep understanding of geography and external threats as a major international port city.

The architectural highlights of Phet Fortress include clearly visible cannon embrasures and battlements. The fort’s angular design projects outward into the river, enhancing visibility and allowing effective surveillance and control of surrounding waterways. The dark red laterite contrasts with the orange brickwork, creating a powerful and imposing appearance. Beneath the structure, wooden piles were driven deep into the ground to prevent subsidence, showcasing traditional engineering wisdom passed down through generations of Thai craftsmen.

The atmosphere around Phet Fortress is cool and breezy throughout the day due to its riverside location. Visitors can enjoy sweeping views of the three rivers merging together, forming distinctive swirling currents that once played a crucial role in navigation and defense. In the afternoon and evening, the calm surroundings combined with the sound of passing boats create a relaxing ambiance that remains closely connected to Ayutthaya’s historic riverside way of life.

For photographers and history enthusiasts, Phet Fortress is one of the most scenic historical landmarks in Ayutthaya. From the top of the fort, visitors can admire panoramic views of the wide river bend, conveying a sense of grandeur and strength. Architecture lovers will appreciate the orderly brick and laterite masonry, which reflects the determination of past generations to build formidable defenses protecting the kingdom from both natural forces and warfare.

Visitors are invited to experience the enduring strength of Phet Fortress and reflect on the legacy of the ancestors. This great fortress stands as a timeless witness to the power, prosperity, and resilience of the Ayutthaya Kingdom.

Private Car:

• Drive along U-Thong Road (the ring road around the city island) to the south, near Wat Suwan Dararam.

Tuk-Tuk:

• Ask for "Pom Phet"; it is a well-known landmark and very easy to access.

Walking:

• If staying in the southern U-Thong area or near the backpacker district, the fortress is within walking distance along the river.

Best Season:

• Accessible year-round, but November to January offers the best breeze for walking along the battlements.

Footwear:

• Wear shoes with good grip if you plan to walk on the fortress itself, as old bricks can be slippery or uneven.

Photography:

• The "Golden Hour" just before sunset is the best time; the warm light on the red laterite is spectacular.

Food & Culture:

• Nearby, there are famous riverside restaurants where you can dine while enjoying a view of Pom Phet from across the water.

Planning:

• Best visited in the late afternoon after touring the inner-city temples to catch the sunset.

Admission Fee

• Local visitors: Free

• Foreign visitors: Free

Opening Hours

• Open Daily (Recommended visiting hours 06:00 – 18:30 for safety and lighting)