After breakfast we will visit the Underground Cistern, the largest of the many underground cisterns built during the Byzantine Empire to supply the city with water. This cistern is especially fascinating because the Byzantine builders recycled many stone structures - capital heads and columns-- that had been used in earlier temples. Now an upside down Medusa stares out at us from her watery home. Then you will visit Galataport Istanbul; is regarded as a major destination project globally with a cruise liner port on the 1.2- kilometer coastline. The hatch system separates the customs and security (ISPS) areas when there is no ship berthed at the port, creating a temporary customs area and keeping the promenade open to the public. the amazing Karaköy shoreline, which had been closed to public access for around 200 years, become one of the premiere walkways in the city. Galataport Istanbul offers an environment for culture & arts, work, shopping.