Paris Walking Tour: Secret Sites and Hidden Gems. Scout out Paris’ cultural gems and tantalizing treats on a walking tour of the city. Led by a friendly local guide, the 3-hour tour introduces you to the secret places that tourist maps miss, like an arcade that offers views into the Louvre Museum. Discover some of the capital's best macaroons, and visit one of the locals’ favorite markets to sample artisan cheeses. Book and Save 20%: Paris Walking Tour: Secret Sites and Hidden Gems.