BALBOA PARK Free tours about history, architecture, horticulture and botanical gardens. Call for schedule. Visitors Center, House of Hospitality, 1549 El Prado, Balboa Park, 619.239.0512. Map P17 www.balboapark.org

baja california tours Tour company offering day trips to south-of-the-border destinations including Tijuana, Rosarito and Ensenada. Hotel pickup is available. 858.454.7166.

Biplane, Air combat & Warbird Adventures Among the airborne tours offered are gentle or thrilling coastal biplane rides for two, you-fly-it air -combat, loops and rolls in a WWII warbird. 2206 Palomar Airport Road, Carlsbad, 760.930.0903. Map U23

CITYPASS Discount combo packages for the San Diego Zoo, San Diego Wild Animal Park, SeaWorld, Universal Studios Hollywood, Disneyland and Disney's California Adventure. 888.330.5008. citypass.com

CLASSIC SAILING ADVENTURES Take to the sea with afternoon and sunset sails for two to six passengers, plus whale-watching excursions. 2051 Shelter Island Drive, Shelter Island, 619.224.0800. Map K9

COACH AMERICA SAN DIEGO Daily tours of all attractions in San Diego and Mexico. Charter minibuses, fully equipped passenger coaches. 3888 Beech St., downtown, 800.331.5077. Map P16

CORONADO HISTORICAL ASSOCIATION TOURS  History and architecture walking tours of the Hotel del Coronado and other destinations. Reservations required. 1100 Orange Ave., Coronado, 619.437.8788. Map L11

CORONADO TOURING Walking tour around the historic Hotel del Coronado and neighborhood. Tues., Thurs. and Sat. at 11 a.m. $12. Meet at Glorietta Bay Inn, 1630 Glorietta Blvd., Coronado, 619.435.5993. Map L11

CORPORATE HELICOPTERS OF SAN DIEGO Breathtaking views of La Jolla and downtown from the comfort of a private helicopter. Custom tours available. Montgomery Air Field, 800.345.6737. Map H11

DESTINATION TEMECULA Door-to-door excursions to Temecula Wine Country, including wine tastings, complimentary glass of wine and lunch. 28475 Old Town Front St., Temecula, 800.584.8162. Map A2

GASLAMP QUARTER HISTORICAL FOUndaTION  Two-hour walking tour of the Gaslamp, Saturdays at 11 a.m. $8–$10. 410 Island Ave., Gaslamp, 619.233.4692. Map R16

HORNBLOWER CRUISES Popular tour company offers daily narrated tours of San Diego Bay, plus dinner cruises, yacht charters, weddings and special events. 1066 N. Harbor Drive, -Broadway Pier, -Embarcadero, 619.686.8700. Map Q14

LA JOLLA KAYAK As the premiere ocean exploration outfit in San Diego, La Jolla Kayak offers fantastic opportunities for adventures on the open sea. Discover by paddle or snorkel the spectacular sea cliffs, the Seven Caves and the Underwater Park renowned to the area. 2199 Avenida de la Playa, La Jolla, 888.459.1114. www.lajollakayak.com

Little Italy Walking Tours Enjoy a two-hour walking tour through this historic and charming, neighborhood near downtown San Diego, filled with restaurants, cafes and boutiques. 619.544.9700. Map P15

magical adventures Hot air balloon flights over scenic Del Mar and Temecula Wine Country. All flights include a champagne toast and light appetizers. 866.ENJOY.US.

OLD TOWN TROLLEY TOURS OF SAN DIEGO Narrated sightseeing tour explores San Diego and -Coronado via trolley or "SEAL" (sea and land vehicle). On- and off-boarding privileges. Call for nearest pickup point and reservations, 619.298.8687.

ORION SAILING CHARTERS Offering daily cruises on San Diego Bay. Charters are also available on classic 1934 sailing vessel. Sheraton Harbor Island East, 1380 Harbor Island Drive, 619.574.7504. Map P13

SAIL SAN DIEGO Enjoy San Diego Bay on afternoon and sunset sails for 2 to 10 passengers. Snacks, drinks included. Customized accommodations available. 2051 Shelter Island Drive, Shelter Island, 619.297.7426. Map K9

SAN DIEGO CHINESE HISTORICAL SOCIETY  Walking tour of the downtown Asian Pacific Historic District. Second Saturday of each month, 11 a.m. Reservations are required. Tours cost $2. Chinese Historical Museum, 404 Third Ave., downtown, 619.338.9888. Map R16

SAN DIEGO HARBOR EXCURSIONS In business since 1915, this company offers daily narrated tours of San Diego Bay plus brunch and dinner cruises, water taxi and more. 1050 N. Harbor Drive, Broadway Pier, Embarcadero, 800.442.7847. Map Q14

SAN DIEGO SCENIC TOURS Daily half-day and full-day tours of -attractions in San Diego and Mexico, including the Agua Caliente Racetrack in Tijuana. Travel in a charter minibus or fully equipped passenger coach. 858.273.8687.

SEAL TOUR This unique amphibious tour explores San Diego Bay and its environs. Departs daily from Seaport Village. Schedules are made weekly, so be sure to call for updates. 619.298.8687. Map Q15

urban safaris Offering walkabouts of San Diego -neighborhoods, including the Gaslamp Quarter, -Hillcrest, University Heights, South Park, Ocean Beach and Bankers Hill. Weekends or by appointment. 619.944.9255.

where you want to be tours Walking and biking tours, including Pacific Beach's Surf and Tiki Walking Tour and the Downtown/Big Bay/Ballpark Tour. Workout power walks are also offered. 619.917.6037.

Xplore Offshore Enjoy a variety of personalized ocean--rafting experiences aboard a Navy SEAL-style boat including high-speed sightseeing, snorkeling and evening cocktails at waterfront venues. 858.456.1636.