"This was an inspired move by the Athenian authorities to build the beautiful new museum over the existing and on-going excavations. Visitors can watch the archaeologists at work both outside and inside, as the partial glass floor allows both the view and the comprehension of life and living through the ages."

"Yes - it's the Eisbach, a man made river. http://en.wikipedia.org/wiki/Eisbach"

"Is this the Eisbach river?"