The first one* is the Rio-Antirrio bridge. Rio is to the right (and south), while Antirrio is to the left (and north). The Rio castle is also visible, just to the right of the bridge.
The second one+ is a spectacular view of New York city. Manhattan, with its parallel Avenues, is visible in the center of the photo. At Manhattan's center, in the shape of a dark rectangle, one can see Central Park. Left and bellow, lies Bronx, while further to the back is Queens and Brooklyn. To the right of Manhattan lies Jersey City. Further back, and to its right, is Newark, NJ.
(Click the thumbnails for a full size version of each pic).
*Flight IB 3885 (ATH-MAD)
+Flight B6 22 (JFK - SYR)