From the outside you really would not know just how incredible the inside of the building is.
Here's a little about the Library from its web page:
Today's Library of Congress is an unparalleled world resource. The collection of more than 151 million items includes more than 34.5 million cataloged books and other print materials in 470 languages; more than 66.6 million manuscripts; the largest rare book collection in North America; and the world's largest collection of legal materials, films, maps, sheet music and sound recordings.
|The main entrance to the Library of Congress|
|The main lobby of the Library. The far door way is to the main reading room.|
|These are the stairs that go to the observation balcony where you can look down on the main reading room.|