Bring a tennis ball when you visit the Oregon Vortex near Gold Hill, Oregon. You'll want to test out the site's power by seeing if the ball really does roll uphill. It's forces have been slightly weaker since the 1980 Mount Helens eruption, but Mystery Spot testers say that the Oregon Vortex gives you the most bang for your buck, phenomena-wise.
Check out the "Mystery Shack" at the Santa Cruz, California, Mystery Spot. This shack, sunk into the side of the hill at a crazy angle, will give you a first-hand opportunity to experience some serious vertigo, at the very least. It will cost you a small fee to park your car in addition to the price of admission to the site, but at least you'll get a free Mystery Spot bumper sticker when you leave.
Explore the St. Ignace Mystery Spot on Michigan's Upper Peninsula. Here you can climb the walls or sit in a chair that is partly suspended in mid-air. After you've explored the Spot itself, you can go on to get lost in the Maze in the Woods or play 18 holes of miniature golf.
Visit Spook Hill on North Wales Drive in Lake Wales, Florida. This "Gravity Hill" is a site where your car may find itself coasting uphill with your foot off the gas. According to local legend, this phenomenon has something to do with a monster gator that was killed by an Indian Chief in times gone by. It's somewhat unclear what dead alligators and Indians have to do with cars rolling uphill, but the town has embraced the general "ghostly" nature of this site and the local elementary school has had Casper the friendly ghost as their mascot for the past 50 years.
Drive down Gapland Road in Burkittsville, Maryland to Gravity Hill, where you can also coast up with your car in neutral. This phenomenon is similar to the one at Spook Hill, the only difference being in the legend. This one involves the ghosts of Union soldiers still pushing their heavy cannons uphill. Another fun fact about Burkittsville--this is the alleged site of the Blair Witch legend, and a few scenes from the movie were filmed here as well.
