Prieto Tours, Av. Francia 125 (tel. 809/685-0102; www.prieto-tours.com), one of the capital's leading organized tour operators, offers a 3-hour tour of the Colonial Zone, leaving most mornings at 9am and again at 3pm if there's sufficient demand; it costs RD$875. A 6-hour tour visits the Colonial Zone, the Columbus Lighthouse, the Aquarium, and the city's modern neighborhoods; the RD$1,225 fee includes lunch and entrance to several well-known museums and monuments. About an hour of the tour is devoted to shopping.
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.