"The World's Tallest Building was one of Phineas and Ferb's Big Ideas. It was meant as a \"really big tourist attraction\" for the city of Danville."@en . . "Giant building"@en . "The World's Tallest Building was one of Phineas and Ferb's Big Ideas. It was meant as a \"really big tourist attraction\" for the city of Danville."@en . "\"The Doof Side of the Moon\""@en . . "World's Tallest Building"@en . "World's Tallest Building"@en . . . . . . . .