The Vltava River, Charles bridge and the castle
Jeremiah says a picture of the Vltava (Moldau) and the Charles Bridge is obligatory and no matter where you take the picture, it will be gorgeous.
But of course, the river is the thing:"...riverrun past evenadams from swerve of shore to bend of bay brings us by a commodious vicus of recirculation back to Howth Castle and Environs." openning sentence of "Finnegans Wake", James Joyce.