Bryan Berg is a man who has the art to build house of cards and has broken a number of world records as well. Berg first broke the world record for tallest house of cards in 1992 at the age of seventeen, with a tower 14 feet, 6 inches tall (4.67 meters). He built another tower at the Department of Architecture at Iowa State University in 1998. It stood at approximately 25 feet (7.62 meters) tall and used over 1500 decks of standard cards weighing over 250 pounds (113.4 kilograms) of standard playing cards. It took two and a half weeks to build working in shifts from 4 to 12 hours each day. During construction, the tower was surrounded by scaffolding. On November 6, 1999, Berg built an even taller tower for the German edition of Guinness Prime Time in the lobby of the casino at Potsdamer Platz, Berlin. That tower stood approximately 25.29 feet (7.7 meters) tall and required over 1700 decks to stack up to 131 storeys. On October 14, 2007 Berg finished a month-long project to build a 25 foot 9 7/16 inch tall "skyscraper" at the African-American Museum at Fair Park in Dallas, Texas (home of the State Fair of Texas), breaking his earlier record.[1][2] For this record he used a newly-developed technique involving stacking cards vertically instead of horizontally, which reduced the number of cards needed by nearly half.[1] . When he was asked whether it is possible to build even taller (for instance, about 100 feet), he said simply, "You bet!"