Have you ever spent time wandering aimlessly around the District, wondering about the various places you could get to within, say, 15 minutes? Well, here’s something that your DCist editor has been toying around with this afternoon that should come in handy for when you find yourself in such a scenario: Mapnificent is an incredibly fun-to-play-with, dynamic tool which allows you to drop a pin anywhere on a map of D.C., specify how much time you have to spend on transit and then poof — the map will then highlight where you can get in that amount of time, using schedules from WMATA and your answers to questions like whether or not you have a bike and how quickly you can or want to walk between Metro stations. There is an easy-to-switch-on option for night time schedules, as well. (A big hat tip to resident DCist tech guru Tom Lee for the info on this particular timesuck.)

Mapnificent is in beta, and we did experience a couple of frustrating slowdowns in Firefox — but it’s still a pretty awesome tool which can give you a basic idea of how accessible any given location actually is.