View of the inside - note the light from the stained windows reflected on the columns
One of the things that I loved the most at the National Cathedral in DC was the beautiful stained glass windows and the colors they reflected on every surface. The play of light was impressive and definitely gave the whole environment that air of divinity that the people in the Middle Ages looked for.
Light reflecting on the clustered columns - amazing the contrast of the details with the array of colors
View of the length of the cathedral with the altar at the end
Details of the windows and ceiling
On your next trip include a few places like this because they have a lot of history attached to them...