This is the West wing of the Smithsonian Castle which is located on the national mall in Washington DC. Designed by architect James Renwick Jr. this impressive space was originally envisioned as a lecture hall. With its abundant natural light it was also considered to be ideal for use as an art gallery. Today it holds a wide variety of exhibits from the Smithsonian's vast collection.
This is a 10 shot HDR shot with my new fisheye lens. I used my gorillapod to stabilize the camera and was hoping the guard wouldn't come in and stop me. The smithonian generally does not allow tripods in their museums.