The San Diego Zoo in Balboa Park , San Diego, California is one of the largest, most progressive zoos in the world with over 4,000 animals of more than 800 species. It is rivately operated by the nonprofit Zoological Society of San Diego on 100 acres of parkland leased from the City of San Diego, and ownership of all animals, equipment and other assets rests with the City of San Diego.

The San Diego Zoo's Wild Animal Park is a zoo in the San Pasqual Valley area of San Diego, California. It is one of the largest tourist attractions in the city and Southern California. The Park houses a large array of wild and endangered animals including species from the continents of Africa, Asia, Europe, North and South America, and Australia. The park is in a semi-arid environment, based around Nairobi village in Kenya, and one of its most notable features is the Journey into Africa tram which explores the expansive African exhibits. These free-range enclosures house such animals as cheetahs, antelopes, lions, giraffes, okapis, elephants, zebras, Przewalski's horses, rhinos, and bonobos. The park is also noted for its California condor breeding program, the most successful program in the country

SeaWorld is a chain of marine mammal parks in the United States, with operations in Orlando, Florida, San Diego, California, San Antonio, Texas, and previously Aurora, Ohio. The parks feature Orca, sea lion, and dolphin shows and zoological displays featuring various other marine animals. The parks' icon is Shamu, the Orca

Lego Land is marketed to young families, and although they have a number of roller coasters, they are not as numerous or as extreme as those in other parks, and there is a greater emphasis on rides suitable for young children.

The parks are split into various areas, which are common between the parks, for example all the parks include a Lego miniland, a model village which includes models of landmarks and scenes from around the world made from millions of genuine Lego bricks. Other common features include a Lego Mindstorms centre (fun-based learning), Duplo Gardens (for smaller children), Driving area (including attractions such as Driving school, Boating school, Ballooning school and Fire Academy), My Town, Wild Woods and Knight's Kingdom.

The parks' rides are all Lego themed; many are made to appear as if they are built out of Lego bricks. They tend to be based on one particular line of Lego: for example, a popular ride at all four parks is the Dragon Coaster, which is loosely based on the Knights' Kingdom Lego sets. Another popular ride is the Driving school, in which children can drive small electric cars made to look like Lego cars around a small road network, after which they gain a mock driving license. The exact set of rides varies between parks, although as with the Disney parks there is some overlap.

Belmont Park is a historic theme park located in the Mission Bay area of San Diego, California. Located on the beach, it attracts thousands of people each year. The attractions and rides include the Giant Dipper, a roller coaster opened in 1925, a Tilt-A-Whirl, a three-story drop tower (the "Vertical Plunge"), the Liberty Carousel, an artificial wave, called the Wave House and an indoor swimming pool. Recently, the Wave House hosted Total Request Live. Newer attractions include a pendulum ride (called "The Beach Blaster") and "Chaos."

In 2002, businessman/surfer Tom Lochtefeld bought the master lease for the property. He has plans to restore the ailing land to its former glory. Among the highlights are hundreds of new underground parking spaces. Sand excavated for the underground parking lot will be used to create a new surfing reef, an indoor-outdoor water park, and a new hotel.

 
Knott's Soak City 's newest and wildest water adventure park! Thirty-two water-logged acres packed with 22 of the most intense water rides imaginable -- all themed to the surf woodies and long boards of the 1950s San Diego coast! Open May through September

Birch Aquarium at Scripps (sometimes referred to as Scripps Aquarium or Birch Aquarium) is the public exploration center for the world-renowned Scripps Institution of Oceanography at the University of California, San Diego.  Accredited by the Association of Zoos and Aquariums, Birch Aquarium at Scripps has an annual attendance of about 400,000, including more than 77,000 school children, and features more than 5,000 animals representing 380 species. The hilltop site provides spectacular views of the Scripps Institution of Oceanography campus and the Pacific Ocean. 

San Diego Harbor Excursions there are three choices for harbor tours.

1. San Diego Harbor Excursions Full Bay Tour Sightsee and relax as you take this two-hour cruise of the full bay.
2. San Diego Harbor Excursions North Bay Tour Cruise the North Bay to see the naval air station, islands, a sub base, monuments, and more.
3. San Diego Harbor Excursions South Bay Tour  Cruise the South Bay to see ships, the Coronado Bay Bridge , busy shipyards, and more.

Whale Watching Excursions Embark on a California gray whale-watching adventure!