The maze of art of the western building is comprehensive and covers a broad spectrum of art periods and locations from around the world. From classical to impressionist and beyond, the galleries comprise mostly up to the mid-to-late 1800's with sculptures and paintings. Other than a lone gallery of modern (~1920-50) photography by a curated photographer, the museum boasts historical art. It's easy to get lost with so many rooms and pathways over the two main floors of the building. Once you're finished in the west building, you can take the underground concourse to the modern building. Unfortunately, the first modern exhibit (Rachel Whitehead?) completely weirded me out and my feet hurt from a day of walking, so I didn't get further than her gallery on the Mezzanine. Overall it's a good stop and a stone's throw from the US Capitol.