On tiny Mackinac Island, no cars are allowed, and the preferred mode of transit is either a bicycle or a horse and buggy. For those not inclined to pedal, which can be treacherous during busy tourist seasons, a guided carriage tour is a leisurely way to cover the same ground. Located on Main Street, the family-run carriage tours has been in business for more than 100 years. Today, their fleet of more than 100 carriages and 400 horses is both the biggest and oldest in the world. Their daily tours include a visit to Arch Rock, Fort Mackinac, the Surrey Hills Museum, the Butterfly Conservatory and the Grand Hotel. Running early May to late October, the tours, on open carriages holding 20 or so visitors, last roughly two hours. The restful clip-clop of the horses, coupled with lake vistas and the smell of pine trees, is a pleasantly old-fashioned respite. The tours are also an easy way to learn about the island's storied history. Private tours, which can be customized to visitors' interests, allow a more in-depth, personal island view. Group tours from $23.50 for adults; private tours at $100 hourly. Island taxi services are also available.