Estunavand Castle

🕰️When was it built?

The castle is associated with the Ismaili period, and some also give it a pre-Islamic history. Its exact construction year is unknown. It was nationally listed in 2002 under number 5808.

🏛️What was it built for?

The fortress overlooked routes between Garmsar and Mazandaran. Lookout towers watched the Hableh Rud valley and the northern desert edge. The elevated position provided views over routes while making the stronghold harder to approach.

👀What you will see

• The fortress's position on the high southern Alborz slopes lifts it above the valley route.
• Towers and ramparts form defensive parts of the complex. Do not enter unstable sections to view them.
• The Hableh Rud valley outlook helps explain why the position mattered for watching the road.

💡Something interesting

In 2026, a science and education park in Garmsar was named after Estunavand Castle. That park is in the town itself; the fortress stands outside it, on the mountain.

🎒Good to know before you go

• The fortress is about 20 km northeast of Garmsar. Ask a local guide about the way.
• Carry water and wear suitable shoes for mountain terrain. Keep away from cliffs and walls in poor light.