What’s That? #10

It’s week #10 of What’s That?

Each week I show small close-up photographs of three — this week, four — different well-known places in and around Washington, DC.

The first person to get all four wins recognition of his or her genius when I reveal the answers a few days later.

Our theme: “In the eye of the beholder”

Post your guesses in the comments. Comments will be hidden until the winner is announced. I’ll credit the first person to get each of the four individually as well as the person who first correctly guesses all four.

Good luck!