>instantly recognizable and nameable. Washington D.C. is rich in those.

I'm curious as to what other instantly recognizable and nameable buildings are in Washington D.C. to a non-American. I can think of the Pentagon and the White House. I can't really think of any others I would think a non-American would immediately recognize and be able to name. The Capitol, maybe? The Washington Monument?

I'm also wondering, with time, if the rebuilt World Trade Center will become just as recognizable. It certainly is striking in the Manhattan skyline, but it just doesn't seem "the same" to me for some reason I can't put my finger on.