If you are anywhere near the National Mall area of Washington, DC, the dome of the building dominates the landscape. It seemed that no matter where I was, every time I turned around, I was able to find a new perspective and view of the dome. It's hard to believe that this is only the fifth tallest building in Washington, DC.
The photo below is at the base of a small reflecting pool looking up at the dome.
According to Wikipedia, the US Capitol building sits on approximately 274 acres. It is enormous!
The last photo I'll leave you with is a view of the Capitol from the west side. This was taken with my 75-300mm lens. I was standing on the National Mall, about halfway between the Washington Monument and the Capitol. This was definitely one of the coolest buildings I saw in DC.