Free guided garden strolls of the outdoor gardens. Get an insider's view of Olbrich's outdoor gardens during a free guided garden stroll. All ages are welcome for this casual overview of the Gardens. Guided garden strolls will vary somewhat according to the season to reflect the garden areas that are at peak interest. Strolls start and end in the lobby near the Garden entrance and are about 45 to 60 minutes in length. No registration is required; strolls are drop-in only. Strolls are held rain or shine and will be cancelled only in the event of dangerous lightning.