You'll have to do some extreme trespassing to get into the abandoned Phoenix Trotting Park racetrack in Goodyear, but the view is pretty fantastic. The doomsday-looking structure has sat untouched (by contractors and restoration experts) for decades, but there have been plenty of parties and graffiti trips by brave and risky individuals since the doors closed. The track was built for almost $10 million in the early 1960s and opened as a gambling spot for horse race fiends in 1965. But poor attendance numbers and bad business shut the park down after two and a half seasons. The outer structure remains visible from Interstate 10 just past Goodyear and is noted for its Star Wars-like, megalithic architecture. But the frame has yet to be purchased, and no plans for a renovated track are on the books, so unless you have a risky mission in mind, it'll be a while before you get to see the inside.