Rancho San Juan de Las Secuas

Rancho Melijo, or Milijo, named after a local Kumeyaay village. It was later called Rancho La Punta for the location of the Arguello family ranch house, on a point of hills overlooking the south end of San Diego Bay, north of the Otay River and east of where the river entered the south bend of the bay. It was a Mexican land grant rancho, granted by Governor José Figueroa in 1833 to Santiago E. Argüello.The rancho covered a square league of land extending 1 league north of the San Antonio Hills and 1 league east of the Pacific Ocean from the mouth of the Tijuana River, including its estuary and the plain east up the lower Tijuan Valley, amounting to 4,439 acres of land. The southern part of the land was adjacent to his fathers Rancho Ti Juan and Rancho San Antonio Abad It extended from the foot of the range of hills that the 1856 county map calls the San Antonio Hills just above the modern border of Mexico, to as far north as to include the south end of the San Diego Bay where the Otay River entered the bay and the southern part of the hills on the north side of the Otay River.With the cession of California to the United States following the Mexican-American War, the 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored. As required by the Land Act of 1851, a claim for Rancho Melijo was filed with the Public Land Commission in 1852. The claim (91 SD) with the California Land Commission was rejected and failed in appeals to higher courts. The Argüello family retained some of the land, homesteading it in the vicinity of the ranch house north of the Otay River and by the bay.The Rancho Melijo included all of modern Imperial Beach, part of southwestern Chula Vista and the Tijuana River Valley, Otay Mesa West, Nestor and Palm City, neighborhoods of southern San Diego. The ranch house fell into ruin in the 20th century and was razed to make way for the I-5 freeway.

The South Bay Salt Works is a salt factory in Chula Vista, in the South Bay region of San Diego County, California. Initially operating under the name La Punta Salt Works operations dating back to at least 1871, for a period of time it was the sole supplier of salt for Southern California. In 1902 it was purchased and renamed Western Salt Company, and later had narrow-gauge rail installed. During the rest of the 20th century, it was the second largest salt producer in California. The land was purchased by the San Diego County Regional Airport Authority in 1999 and transferred to the United States Fish and Wildlife Service. In 2000, it assumed its current name, and has continued salt harvesting operations. Water evaporated at the salt works comes from the Pacific Ocean. Since its inception, more than a million tons of salt has been harvested. The salt ponds are a stopping point for migratory birds; some of these birds are threatened or endangered. In 2011, two of the works' salt ponds were restored to marshlands.

Palomar Street station is a station on the Blue Line of the San Diego Trolley located in the city of Chula Vista, California. The stop serves a variety of purposes, holding the function of commuter center with a park and ride lot and providing access to the nearby commercial, industrial, and residential areas, as well as Southwestern Community College.

Egger Highlands is a residential neighborhood in the southern section of San Diego. It neighbors Palm City and Nestor to the east, San Diego Bay to the north, Imperial Beach to the southwest and Chula Vista to the northeast. Major thoroughfares include Coronado Avenue, Saturn Boulevard, and Palm Avenue.

Camp Lawrence J. Hearn was a United States Army facility formerly located in Palm City, San Diego, California. The Third Oregon Infantry established the camp in 1916 during its border service; it was abandoned in 1931 by the 11th Cavalry Regiment when the regiment moved to the Presidio of Monterey.

Palm Avenue station is a station on the Blue Line of the San Diego Trolley located in the Palm City neighborhood of San Diego. The stop serves a variety of purposes, holding the function of commuter center with a park and ride lot and providing access to the nearby commercial and residential areas.

Ocean View Christian Academy (formerly Midway Baptist Schools) is a private Christian school serving grades K-12 in San Diego, California.

The Sweetwater Union High School District is a school district headquartered in Chula Vista, California. As of 2011, the school district is the largest secondary school district in California.The union high school district serves over 42,000 high school-aged students and over 32,000 adult learners. Located in the southwestern part of San Diego County between Southeast San Diego and the International Border with Mexico, the district serves the communities of Chula Vista, Imperial Beach, National City and the San Ysidro portion of San Diego. Sweetwater is one of the most ethnically and economically diverse districts in California. Approximately 87 percent of students belong to an ethnic minority group and over 40 percent of students qualify for the free or reduced lunch program. Overseen by a five-member Board of Trustees, the district operates 14 high schools (11 regular, two alternative, one charter); 11 middle schools; 4 Adult schools; a regional occupational program (ROP); and special education. The district has earned recognition for its "Compact for Success" program, a deal made with San Diego State University that guarantees Sweetwater graduates admission to the university if they meet certain requirements all throughout their high school career.

Palm City is a neighborhood in the southern section of San Diego. Its neighbors are Otay Mesa West to the south and east, Egger Highlands and Nestor to the west, and Chula Vista to the north. It also serves as a gateway to the beach cities of Imperial Beach, and Coronado, by way of the Silver Strand isthmus, due to it being where California State Route 75 meets Interstate 5. Major thoroughfares include Coronado Avenue, Hollister Street, Beyer Boulevard, and Palm Avenue.

Options Secondary School (Commonly known as The Portal), is located in Chula Vista, California on the Chula Vista Adult School campus. It is run under the "Alternative Education" division of the Sweetwater Union High School District, which also runs the Independent Studies program. It has a small campus and a low ratio of students to teachers, in some cases, no more than twenty students in a class. The school operates on a bell schedule from 12:10 PM to 6:06 PM, with three periods a day. Period one is from 12:10 to 1:52, followed by a thirty minute lunch period. After this, second period begins at 2:27, and runs until 4:09. After a ten-minute passing period, period three finishes the school day, from 4:19 all the way to 6:06. The school opened with the original mission to cater to those with "individual learning styles", in keeping with its original name, "Sweetwater Academy for Individual Learning Styles." It was designed for those that didn't fit in at other schools, based upon learning plans. In May 2012, it was decided that the name of the school would be changed to "The Portal: A learning community", much to the chagrin of the students. Most students who have attended since before the 2012–2013 school year still refer to the school as "Sails". The district has tried several times to shut the school, to no avail. After Prop 32 passed in November 2012, the district received funds from taxes to upgrade and renovate campuses, as well as educational technologies. Some form of loophole prevented the school from acquiring grants that other campuses received.

San Diego National Wildlife Refuge is a National Wildlife Refuge in California. It is part of the San Diego National Wildlife Refuge Complex. A variety of habitats from coastal sage scrub and chaparral to oak woodland and freshwater marsh describe this inland refuge in San Diego's backcountry.The Living Coast Discovery Center is located in the Sweetwater Marsh Unit adjacent to the administrative headquarters for the US Fish & Wildlife Service. The Center features exhibits of marine life, birds and plants found the San Diego Bay, and partners with the Refuge to offer environmental education programs. There are 1.5 miles of trails with access to the Bay. The Otay-Sweetwater Unit of the San Diego National Wildlife Refuge is part of the National Wildlife Refuge System's contribution to the Multiple Species Conservation Plan, a program designed to conserve enough open space and habitat for species survival while enabling orderly development to occur where necessary. It is closed to the public. San Diego National Wildlife Refuge's abundance of coastal sage and chaparral are an important addition to other inland preserves established to conserve and restore fast diminishing habitat. This inland refuge is home to such endangered birds as least Bell's vireo, California gnatcatcher, a rare butterfly, the Quino checkerspot and to the San Diego horned lizard. Biological surveys for other species are ongoing as new land is acquired. The approved refuge boundary for the San Diego Refuge is 44,000 acres (180 km2), and 8,000 acres (32 km2) for the Vernal Pools Unit.

The Montgomery Memorial is a monument dedicated on May 21, 1950, to the pioneering aviation achievement of John J. Montgomery and his early glider flights in the 1880s at Otay, California. It is situated adjacent to the Montgomery-Waller Recreation Center. The monument features a 93-foot high stainless steel static test wing panel for the Consolidated B-32 Dominator mounted upright that is visible for miles. Because of this feature it is also sometimes referred to locally as Silver Wing.