Happy Valentine’s Day/Presidents’ Day weekend combo! In case you didn’t know, this is a fee-free weekend in most National Parks. If you really wanted to mark the occasion, you could spend the day in a Presidentially themed park or historic site, such as Theodore Roosevelt National Park or one of the Presidential homes and birthplaces. Or, always free-of-charge, you could walk around the Presidential memorials of Washington, DC. 
Here’s a couple from my trip a few years back:
Washington Monument
Still waiting to get the passport cancellation for this one. Someone (husband) convinced me I had to actually go up to the top to collect the stamp, and we didn’t wake up early enough to get tickets. However, if you have fewer scruples and/or forgot to stamp your passport book elsewhere in the National Mall, the lobby of the Washington Monument has (or at least had) quite the collection of stamps.
Lincoln Memorial and Ford’s Theatre
A couple locations in the National Mall area are devoted to the 16th President. Of course the famous Lincoln Memorial is a must see, and just north of the Smithsonian is the infamous Ford’s Theatre, where Lincoln was assassinated. You can take a tour of the theater – or see a historical show – as well as visit the 
Peterson House across the street where Lincoln died (closed when I visited so not sure if there’s a cancellation – or perhaps I passed up
the opportunity to stamp it at the theater on the same principle I mentioned above?).
Franklin Delano Roosevelt Memorial
This
one was new since I last visited the area on that 8th grade field trip. A good stop if you’re walking around the Tidal Basin en route from the Lincoln Memorial to the Jefferson Memorial. There are four sections to walk through dedicated to the president’s four terms, and the memorial gives a pretty balanced look at the highs and lows of a very eventful presidency. This memorial is also near the Martin Luther King Jr. Memorial, which was still fenced off before opening the year we were there.
Thomas Jefferson Memorial
One of the top three most-recognizable memorials, it is patterned to look like Jefferson’s home in Monticello. My camera died before we got there, so I only have this not-so-great cell-phone pic. A nice stop on the tour of D.C. memorials, but if you really want to get in the Jefferson zone, I recommend a 
visit to Monticello near Charlottesville, VA.
George Mason Memorial
Not a president, but George Mason was an influential “Founding Father” and Virginia delegate to the Constitutional Convention. I admit, that until I visited this small memorial a short walk from the Jefferson Memorial, the only reason I had heard of George Mason was because the name pops up occasionally around NCAA tournament time (including a final four appearance and, perhaps more importantly, second round win against UNC in 2006). Mason held the relatively progressive opinion at the time that the slave trade should be prohibited by the new constitution (although he was a slave holder himself), and he was influential in the adoption of the Bill of Rights. 
The Visitor’s Center has a museum and is the base for the U.S.S. Arizona, Utah, and Oklahoma memorials, honoring those ships and the people who perished in the attacks. The museum gives the details of the events of Dec. 7, 1941, including the military details of the attack and the day as it played out for the people of Pearl Harbor. There are some interesting artifacts, including a marked up draft copy of FDR’s famous “a date that will live in infamy” speech. The exhibits definitely freshened my memory from that report I wrote in 3rd grade…
“centerpiece” of the monument. The memorial is only accessible by boat with a ticket from the Visitor’s Center. The short boat ride across the harbor is preceded by a film, and then visitors are given time for observation at the memorial, which is built immediately over the ship. Almost 1800 men were lost when the ship sunk and are still entombed there. The names of all those lost in the Arizona are engraved onto a wall at the far end of the memorial. 
Interestingly, a side panel also lists the names of U.S.S. Arizona survivors who later requested to be interred there. From the observation deck, you can see fish darting in and out of the corroded metal of the Arizona and oil slicks that to this day still rise to the surface.
In addition to the U.S.S. Arizona memorial, there is a small, separately managed naval museum including a small sub available for tour at the site of the visitor’s center. I believe a shuttle will also take you over the U.S.S. Oklahoma Memorial, but the Utah is not open to the public as it is on the active military base.
