We visited the Eiffel Tower , UNESCO headquarters and sailed down the river Seine on a bateau - mouche and that was only day one . The next day we had to walk as the transport workers were on strike ( strike in France - unusual ! ! ) . We went to the Opera House which was perhaps the most beautiful building ever and shopped in the Galaries Lafayette ( Paris ' most famous department store ) . In the afternoon we visited the Sacre - Coeur and lunched in the Place du Tertre .
Why would the tourists subject themselves to walking ?
Pick the best answer from the following options:
- Public transportation was shut down .
 - None of the above choices .
 - They wanted to get exercise .
 - They wanted to see the city .


Public transportation was shut down .