Fractal puzzles are located in Single Player from the Main Menu. Select from one of these three puzzles and set the following:
Leadenhall Market - London, England
The Colosseum in Rome, Italy
Construction Mode - Turbo
Experience Level - Beginner
Preset - Small (12 pieces)
You start out on the second level with 12 puzzles to complete. Each puzzle has a total of around 25 pieces, and once you complete each of the 12 puzzles you will then move on to the first level of the puzzle. The first level is comprised of the first 12 puzzles you just completed. Each puzzle is turned into a piece, and then made into a puzzle itself, making the first level a puzzle with 12 pieces.