A good night of trick or treating requires several things: closely-spaced homes that cut down on walking and result in more candy gained; good lighting, but not too good; some large, well-decorated spooky houses; a safe neighborhood; and, most important, wealthy homeowners who give out the good stuff. While there are plenty of areas that combine these elements in Denver, Seventh Avenue Parkway has them all and more. Just ask the vanloads of kids from other neighborhoods who swoop down each October 31 like vampire bats and then disappear in the ghoulish night.