This image shows the north entrance to the ancient palace ruins of Knossos, on the Greek island of Crete.
The description states simply: Knossos, North Entrance
–The palace is known in mythology as the home of King Minos, who built a labyrinth with a Minotaur trapped inside.
This card was used and is dated 31 March 1969.
On the Acropolis overlooking Athens, across from the Parthenon, is the Erechtheion. The most notable part of the structure is the Porch of the Caryatids, female sculptures designed to act as pillars for the porch.
The description is very short:
ATHENS: Portico of the Caryatides
The original marble statues have been removed and replaced with castings, since the intense pollution and acidic rain of modern Athens was literally melting the marble away. This photo shows them before removal and the beginning of extensive renovation of the structure.
The postcard was used and has the date of June 4, 1977.
The featured structure in this picture is the Odeon, or theater, in the foreground. In the high background is the Parthenon, the temple of Athena Parthenos, guardian and namesake of the city.
The description is short:
ATHENS: The Odeon of Herode Atticos
The name is more commonly spelled Herodes Atticus. This card was used, and is dated 4 June 1977.