The Library of Congress is located east of the Capitol building and south of the Supreme Court building.

A sculpture of Neptune is in front of the Library of Congress.

A large disc inside the front door marks the alignment of the building with the cardinal directions.

Surrounding the disc are the signs of the zodiac.

Mosaics, frescos and sculptures cover many of the floors, ceilings and walls.

The pictures above and below are of the mosaic ceiling in the room between the entranceway and the main reading room.

These two pictures were taken from opposite ends of the room.

Five circles run down the center of the ceiling, with four circles on either side.

Below is a diagram of the 13 circles in the ceiling.

From one end of the room, the circles marked in green and blue on the diagram form a tree of life.

The circles marked in green and yellow on the diagram form a tree of life from the other end of the room.