This photo was taken from inside the Budapest Whale, which is sometimes called the CET Building. The Whale is a building that houses galleries and shops on the Pest side of the Danube. It’s so named because one end of it is a gracefully shaped glass and steel construct that is reminiscent of a whale shape. Hence the light traveling through onto the water. (The other end is a more traditional red brick structure.)
One can see Freedom Bridge (Szabadság híd) and Gellért Hill in the background toward the upper right-hand corner.
Gellért Hill is a prominent overlook in Budapest; it’s topped by the Citadel. The hill offers splendid views both north and south down the Danube River. I show the view to the South to be contrary (pictures to the north, dominated by the sprawling neo-gothic Parliament building, are ubiquitous–and are commonly the subject of postcards.) If you want some exercise, you can walk up to the top. The stairs are adjacent to the roundabout at the foot of the Buda-side of the Erzsébet bridge.