Completed the following sentence: Tilke secured the contracts to design many high-profile new world circuits from scratch, mainly in Asia but also in Eastern Europe. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Tilke also designed the new Circuit of the Americas in Austin, Texas, where F1 made its return to the United States in 2012.<unk> Tilke also designed the new Circuit of the Americas in Austin, Texas, where F1 made its return to the United States in 2012. ️<unk>️<unk>️<unk>️<unk>️
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