Harbour of Eleutherios
The Harbour of Eleutherios (), originally known as the Harbour of Theodosius (, ) was one of the ports of ancient Constantinople, the capital of the Byzantine Empire, located beneath the modern Yenikapi neighbourhood of Istanbul, Turkey. It was built at the mouth of the Lycus watercourse that ran through the city to the Propontis (the Sea of Marmara).

The harbour was built in the late 4th century, during the reign of Theodosius I, and was the city's major point of trade in Late Antiquity. It continued to be used until the 11th century. Silt from the Lycus creek eventually filled the harbour entirely and the area was later transformed for agricultural use due to the effects of upstream erosion and deposition. In Ottoman times, the area was built over.

The harbour was located on the south side of the peninsula on which the city is built, on the shore of the Sea of Marmara. The other harbours on the southern coast of the city were the Harbour of Julian and the small harbour of the Boukoleon Palace. The harbours of Neorion () and Prosphorion (, ) were on the Golden Horn, on the northern shore of the peninsula. Today the northern coast of the harbour is delineated by Kucuk Langa Cad. (Small Langa St.) named after the earlier Greek Vlanga name.

In November 2005, workers on the Bosphorus Tunnel Project discovered the silted-up remains of the harbour. Excavations produced evidence of the 4th-century "Portus Theodosiacus". There, archaeologists uncovered traces of the city wall of Constantine the Great, and the remains of over 35 Byzantine ships from the 7th to 10th centuries, including several Byzantine galleys, remains of which had never before been found. In addition, the excavation has uncovered the oldest evidence of settlement in Constantinople, with artefacts, including amphorae, pottery fragments, shells, pieces of bone, horse skulls, and nine human skulls found in a bag, dating back to 6000 BC.
Q46696
Theodosius
PER
Q16869
Constantinople
LOC
Q12544
Byzantine Empire
LOC
Q4824801
Yenikapi
LOC
Q406
Istanbul
LOC
Q43
Turkey
LOC
Q1233637
mouth
Concept
Q35367
Sea of Marmara
LOC
Q46696
Theodosius I
PER
Q217050
Late Antiquity
TIME
Q270699
Silt
Concept
Q11451
agricultural
Concept
Q12560
Ottoman
LOC
Q12907220
Harbour of Julian
LOC
Q1003322
Boukoleon Palace
LOC
Q18123476
Neorion
LOC
Q18210845
Prosphorion
LOC
Q179839
Golden Horn
LOC
Q497844
Bosphorus Tunnel Project
LOC
Q959782
Excavations
Concept
None
city wall
UNK
Q8413
Constantine the Great
PER
Q188924
galley
Concept
Q178401
amphorae
Concept
Q3288771
Harbour of Eleutherios
LOC
2005-11-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
November 2005
DATE
6000-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
6000
DATE
+4^^http://www.w3.org/2001/XMLSchema#decimal
4
NUMBER
+11^^http://www.w3.org/2001/XMLSchema#decimal
11
NUMBER
+4^^http://www.w3.org/2001/XMLSchema#decimal
4
NUMBER
+35^^http://www.w3.org/2001/XMLSchema#decimal
35
NUMBER
+7^^http://www.w3.org/2001/XMLSchema#decimal
7
NUMBER
+10^^http://www.w3.org/2001/XMLSchema#decimal
10
NUMBER
country
country
capital
country
country
time period