Three presidential assassination spots are clearly marked. The fourth isn't marked at all - but I may have found it.

"Buchanan was a great president too," said absolutely no one - so why does he have a memorial?

It doesn't smell in this basement crypt, but even if it did, there are two presidents and two first ladies in there. A room like that could smell if it wanted to.

If you want to like Ike while in the DC area, take the Metro Yellow Line down to King Street station and walk a half mile or so through Alexandria to Eisenhower Circle, built to officially mark the start of the Eisenhower national expressway system.

The tomb of the man almost always ranked by presidential historians as our worst president is elegant and well-maintained.