This image shows the front entrance of the Marmorkirken, or Marble Church, located in Copenhagen, Denmark. It is also known as Frederick’s Church.

The description states simply:
MARMORKIRKEN
The Marble Church
–It was originally intended to be built entirely of marble, but was later redesigned to be built of limestone. The building was started in 1749 but not completed in 1894.
This poscard was used and is dated 1953.

An elevated view of the City Hall Square in Copenhagen.

The description states:
COPENHAGEN – The CITY HALL SQUARE – the busy centre of the city. The City Hall was built about 1900 by the architect, Martin Nyrop. The building with the tower to the left is the “Palace Hotel”.
The postcard was mailed, and is dated July 23, 1953, so the picture depicts the square as it looked in the early 1950s.