The most serious action takes place at the Olympic-size indoor pools in the Centre de Natation, at 34 boulevard Carnot, and the Forum des Halles shopping complex.
Olympic medal winning swimmers have trained at the Centre de Natation.
mnli hypothesis: Olympic medal winning swimmers have trained at the Centre de Natation. premise: The most serious action takes place at the Olympic-size indoor pools in the Centre de Natation, at 34 boulevard Carnot, and the Forum des Halles shopping complex.