Washington Monument

 You can reserve tickets for a $1 up to 30 days ahead of time for the Washington Monument.  The day before they release more tickets online for $1.  The day of at 8:45 they release 200 more free tickets first come, first serve.  The line can start forming early.

View froom the top - each direction

Where the stones change color from the elevator.  Stand near the elevator door when going down if you can.