Turkey's largest city has gone by many names. The Roman-derived name was officially dropped in 1930 by Atatürk's national reforms.
Currently, the sprawling, dual-continental city is building a rail tunnel to connect the two sides of the Bosphorus Strait. Early in the construction, however, an ancient seaport was unearthed. According to the BBC:
Just a few metres below ground, they found an ancient port of Constantinople - named in historical records as the Eleutherios harbour, one of the busiest of Byzantium.Like Boston's Big Dig, the discovery of historical artifacts is likely to slow down the project. The tunnel is projected to open in 4 years at a cost of $2.5 billion.