First you have to consider what would draw their attention in the first place.
If we were to develop the technology to visit other planets outside our solar system, we'd most likely be looking for places that show signs of intelligent life first. Signs of intelligent life would be changes in the atmosphere that could be attributed to industry, or possibly radio waves.
In order for another species to see those signs from our planet, they'd have to be within about 125 light years, since radio waves travel at light speed, and the first radio transmissions we put out occured circa 1895, and our industrial age hadn't grown enough to affect the atmosphere to the point of being observable from light years away.
If there was someone within that distance, and they had the tech to travel at the speed of light, you'd have to cut the distance in half, for them to detect us, then travel here.
When you consider how many stars are within 65 light years, then how many of them have planets capable of supporting life, and how many of them would be advanced enough and interested enough to come here, it really decreases the odds of anyone visiting us from another planet.