This giant pineapple is 16 meters tall and is located at The Big Pineapple, which is a tourist attraction and working farm near Nambour, Queensland, Australia. They have tours, rides, shops, restaurants, and exhibits. I believe you can go inside the pineapple and get a view from the top. There is some history behind the attraction on Wikipedia.
There is another giant pineapple not too far away in Gympie at a vacant gas station. It looks to rival The Big Pineapple in size. I don't know the size of this one, though.
The Gympie pineapple circa 2005. Photo by drewish.
Bathurst, South Africa claims to have the "biggest Pineapple in the World!" This one measures 16.7 meters high and has 3 floors, complete with a gift shop, and an observation deck.
A new Guinness World Record was set yesterday (or possibly a week before) in Philadelphia for the World's Largest Pinata. The pinata measured in at 28.5 meters (94′) long, 7.2 meters (24′) wide and 18 (60′) meters tall and was filled with 8,000 pounds of candy. This was all done for a Carnival Cruise commercial. Organizers had originally planned to break open the pinata in a public event, but became concerned over safety when 15,000 people showed up. They cancelled the event and broke (broke isn't really the right word) open the pinata secretly using about 300 extras for the commercial shoot. All the candy will be donated to a number of charities.
Seamstresses in Peru set out to set a Guinness World Record for the largest pair of jeans sewn. (link) The pair of jeans measures 141 feet tall and 98 feet wide and weighs in at 7.5 tons. The current record is held by the city of Medellin in Columbia. That pair was 114 feet tall and 82 feet wide.
It sounds like they are just waiting for their record setting jeans to be accepted by Guinness. There wasn't a Guinness representative present, but a notary who can send documentation to the group was.
The pants will be recycled as backpacks for school children.