Bring the tripod, and get CLOSE! That's the nicest thing about a UWA lens - it lets you get close to the buildings and still fit them in. Find areas where you can get up close, but keep enough background to see some night sky around it...just don't cut off the building. Some very cool up close shots at Lincoln Memorial of the statue itself, some down-low shots right on the water of the reflecting pool looking across, experiment with framing - stand under trees and use the branches to 'frame' the buildings in your shots if it's not a windy night (it doesn't work well when windy), closeups of some of the quieter memorials would work great at night - Vietnam memorial wall would be very powerful closeup, filling the frame close but winding away, with a long exposure. The walking soldier statues would be an awesome subject for getting right up close and taking a wide angle night shot...low angles might be very interesting for those to make them feel bigger and more dimensional, like they are walking right over the camera (I believe that's the Korea War memorial). Take a shot or two from inside the Lincoln or Jefferson Memorials looking out at the rest of the town - wide angle will allow you to get a shot through the columns and still pick up a wide landscape night scene. Just a few ideas off the top of my head!
