If you walk heading north along the quays, you'll arrive at some of the lushest parks in Geneva. Parc Mon-Repos is off avenue de France and La Perle du Lac is off rue de Lausanne. Directly to the right is the Jardin Botanique (Botanical Garden), which was established in 1902. It has an alpine garden, a little zoo, greenhouses, and exhibitions, and can be visited free from April to October daily from 8am to 7:30pm, and from November to March daily from 9:30am to 5pm.
You can take a boat to the other side of Lake Geneva and get off at quai Gustave-Ador. From there you can explore two more lakeside parks -- Parc la Grange, which has the most extravagant rose garden in Switzerland (especially in June), and next to it, the Parc des Eaux-Vives.
When you leave the Botanical Garden on the Left Bank, you can head west, along avenue de la Paix, about 1.5km (1 mile) north from the Pont du Mont-Blanc, to the Palais des Nations in the Parc de l'Ariana.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.