Demirkoy

Demirköy ("iron village") is a forested district in the Istranca (Yıldız) Mountains of northern Kırklareli Province, near the Bulgarian border. It takes its name from the Demirköy Foundry (also known as the Fatih Foundry), an Ottoman iron-casting works founded in the 15th century to exploit local iron ore — cannonballs used in Mehmed the Conqueror's 1453 siege of Constantinople are known to have been cast here. The foundry operated for over four centuries before its 19th-century decline; its ruins have been excavated and partly restored since the early 2000s.

By Car / Road

On local roads, 50 km north of Kirklareli.

Walkable.

• Demirköy (Fatih) Foundry ruins — Excavated remains of the Ottoman Empire's early cannon-casting works, dating to the 15th century.

• Istranca Mountains — Forested uplands surrounding the district.

• Dupnisa Cave — A show cave nearby.

• Hiking in the Istranca forests.

Tea houses are the standard local gathering spot.

Forest products.

• Kırklareli — 50 km south.
• Dupnisa Cave — 10 km north.