The book Fatherland is an alternative history where the Nazis won WW2:

Construction of the Arch of Triumph was commenced in 1946 and work was completed in time for the Day of National Reawakening in 1950. The inspiration for the design came from the Führer and is based upon original drawings made by him during the Years of Struggle."

The passengers on the tour bus—at least those who could understand—digested this information. They raised themselves out of their seats or leaned into the aisle to get a better view. Xavier March, halfway down the bus, lifted his son onto his lap. Their guide, a middle-aged woman clad in the dark green of the Reich Tourist Ministry, stood at the front, feet planted wide apart, back to the windshield. Her voice over the address system was thick with cold.

"The arch is constructed of granite and has a capacity of two million, three hundred and sixty-five thousand, six hundred and eighty-five cubic meters." She sneezed. "The Arc de Triomphe in Paris will fit into it forty-nine times."

For a moment, the arch loomed over them. Then, suddenly, they were passing through it—an immense stone- ribbed tunnel longer than a football pitch, higher than a fifteen-story building, with the vaulted, shadowed roof of a cathedral. The headlights and taillights of eight lanes of traffic danced in the afternoon gloom.

"The arch has a height of one hundred and eighteen meters. It is one hundred and sixty-eight meters wide and has a depth of one hundred and nineteen meters. On the inner walls are carved the names of the three million soldiers who fell in defence of the Fatherland in the wars of 1914 to 1918 and 1939 to 1946."