Started in 1987, this annual event draws professional and amatuer sand sculptors from all over. Cash prizes are given and generally there are many dozens of sculptures to admire. Free classes are given to both children and adults. The exact venue has changed over the years, but lately it has been on the beach behind the Sheraton hotel. It seems to get bigger every year! It is usually held on the 3rd or 4th weekend of October, the week following Biker's Fest (see that tip).
Generaly held the 2nd or 3rd weekend of October(check website), thousands of motorcycle enthusiasts from many different parts of U.S. and Mexico migrate to SPI. At times the island sounds like an over-sized bee hive from all the bmm-bmm-bmm's of the "hogs". Scenic rides are arranged (one to Matamoros on the Mexican border) as well as concerts, an open-air Biker's Breakfast, booths selling biker accesories, etc. Harley-Davidsons prevail. Most activities take place at the Convention Center or the Schlitterbahn parking lot.
This is usefull when driving in southern texas. If a person is wanting to pass you, you can stay at the same speed you are going but, you pull into the sholder of the lane, so the car can pass even if there is another car coming the other direction. You will she exactly what i am talking about when you are down in this area.