Where In D.C. And/Or Surrounding States Are David, Theo & Ruby?

That was the question I was being asked about seven photos emailed to me last night.

"Where in D.C. and/or surrounding states are David, Theo and Ruby?"

As made mention of previously, the Tacoma Trio, Ruby, Theo and David, are currently in the other Washington, Washington, D.C., where they are taking their parental units on a tour of iconic Washington, D.C. locations, and, apparently, locations, in states surrounding D.C., such as the above visit to Virginia, to the namesake of the town I lived in before moving to Texas, Mount Vernon, George Washington's home.

Above, I believe Ruby, David and Theo are visiting the memorial to our 3rd president, Thomas Jefferson.

And this looks like Mama Michele has joined the Tacoma Trio at the Vietnam War Memorial. 

This one is totally a guess. Are they in the Smithsonian Institute? Looking at some famous piece of jewelry? A Jackie Kennedy pearl necklace? Or some such thing?

The Albert Einstein Memorial Statue. Nice that Einstein got sort of a whimsical tribute for someone so serious, you know, figuring out all sorts of possible things, like atom bombs, among many works of physics, like the Theory of Relativity, and other things I don't understand.

The above is known in Washington, D.C. as the Love Wall, designed by Lisa Marie Thalhammer, located in Blagden Alley.

And now we have headed a bit north and east, to Maryland, and what is known as the National Harbor, with the Ferris wheel known as the Capital Wheel in the distance.

So, how did I do, figuring out where in D.C. and surrounding states, David, Theo and Ruby were?

UPDATE: I missed seeing the following two photos when I first saw the incoming email...

My guess would be that, above, the Tacoma Trio are in the Smithsonian standing by a World War II torpedo.

And, the I Love You sign is likely near that aforementioned Capital Wheel and National Harbor...