It took 83 years to construct the National Cathedral (began in 1907). It has 231 stained glass windows, 112 gargoyles & a Darth Vader sculpture in the west tower. Watch this video for more history. Read more.
Cemetery - 624 acres, where veterans and military casualties from each of the nation's wars are interred. See video for more history. Read more.
Go to the FDR Memorial at night. The lights play with the statues and waters in a way that daylight just doesn't bring out. Read more.