That's Parthenocissus quinquefolia, called Virginia Creeper. Look out, because it seems to grow right alongside poison ivy, most of the times that I've seen it!
Though this plant is not related to Poison Ivy (not even in the same family), reports of contact dermatitis are not uncommon.

Considered a weed by most, many appreciate the fall color it provides and find the 5-leaflet leaf structure very attractive. It's in the same plant family as grapes, Vitaceae.

Virginia Creeper is pretty, but in my experience quite invasive. It's not as bad a kudzu, but my neighbor has it in a wooded area along our fence and I fight it constantly. Runners will appear 15' inside our yard and seedlings pop up everywhere.

Gosh, any plant that's not difficult to grow is labeled an invasive...a poor plant just can't win. Don't tell an Ivy League graduate his dorm was covered in invasive weeds, Boston or Virginian.

I was reading, a while back, that Yale has finally successfully rid their buildings of ivy. It was simply too destructive and the damage would often remain hidden from view until it became hugely expensive to repair.

Rhizo - Thanks for posting. Absolutely right. Plants growing on side of buildings cause three major problems: damaging roots growing into the structure itself, invites moisture, and invites insects. It looks pretty, but I would never have any vine of any type growing on my home. I plant all foundation plantings with the rootball center at least three feet from the house. I actually keep a yardstick in my gardening tools for this - works great!

Virginia creeper is a terrible, terrible plant down here in Florida. If it gets away from you (grows without your noticing), the lateral roots easily get an inch thick or more - and then you can't even yank them up. It becomes a major project to remove even a few feet of it.

Carol

The term invasive has 2 meanings. One has to use the context of a sentence to see which connotation of the word invasive applies. This plant is a native, so technically it can't be invasive in the sense that it invades where it shouldn't. But it's far too exuberant for most to want it in a manicured lawn & garden setting.