YearrooWhen was the Pentagon completed?
194320th century · 1900s
The Pentagon is completed.
Built in about 16 months.
1943
150016001700180019002000
Around the same time
- When was Mount Rushmore completed?1941
- When did Japan attack Pearl Harbor?1941
- When did the Manhattan Project begin?1942
- When was the Battle of Midway?1942
- When did the first nuclear reactor start up in Chicago?1942
- When was Casablanca released?1942
- When was D-Day, the Allied landing in Normandy?1944
- When was the GI Bill signed?1944
Some events played out over months or years, so we use the year they are best known for. Spotted a mistake? Email [email protected].