USS Boston (1884)

At 5:12 a.m. on Wednesday, April 18, 1906, the coast of Northern California was struck by a major earthquake with an estimated moment magnitude of 7.9 and a maximum Mercalli intensity of XI (Extreme). High-intensity shaking was felt from Eureka on the North Coast to the Salinas Valley, an agricultural region to the south of the San Francisco Bay Area. Devastating fires soon broke out in San Francisco and lasted for several days. More than 3,000 people died, and over 80 percent of the city was destroyed. The events are remembered as one of the worst and deadliest earthquakes in the history of the United States. The death toll remains the greatest loss of life from a natural disaster in California's history and high on the lists of American disasters.

USS Benevolence (AH-13) a United States Navy Hospital Ship, was built as SS Marine Lion in 1944 by Sun Shipbuilding & Drydock Co., in Chester, Pennsylvania, under a Maritime Commission contract. She displaced 11,141 tons fully loaded, was 520 feet (158.49 m) long, had a beam of 71.6 feet (21.82 m) and a draft 24 feet (7.31 m). Her maximum speed was 17.5 knots (32.41 km/h or 20.14 mph). She was sponsored by Mrs. Daisy Unter, transferred to the United States Navy on 31 July 1944, converted to a hospital ship by Todd-Erie Basin Shipyard, Inc., Brooklyn and was commissioned on 12 May 1945, with Captain C. C. Laws in command.

King Philip was a 19th-century clipper ship launched in 1856 and wrecked in 1878. The wreck of this ship is only rarely visible; very infrequently the timbers can be seen protruding from the sands of Ocean Beach, on the Pacific Ocean coast of San Francisco, California. The wreck is the "most complete remains of an American medium clipper." This is a shipwreck of one of many ships that were wrecked in and around San Francisco Bay.

Ocean Beach is a beach on the west coast of San Francisco, California, United States, bordering the Pacific Ocean. It is adjacent to Golden Gate Park, the Richmond District, and the Sunset District. The Great Highway runs alongside the beach, and the Cliff House and the site of the former Sutro Baths sit at the northern end. The beach is a part of the Golden Gate National Recreation Area, which is administered by the National Park Service. During the late spring and summer, San Francisco's characteristic foggy weather frequently envelops the beach. The average temperature for the last 5 years has been 13.2 °C (55.8 °F) Most of the beach-friendly weather occurs in the fall (usually mid to late September) and early in the spring when fog and strong sea breezes are less prevalent. Dry winter days also tend to provide excellent weather at Ocean Beach (especially in drought years). The water at Ocean Beach is noteworthy for its strong, dangerous currents and powerful waves, which make it popular among serious surfers. The water is cold, due in part to a process known as upwelling, in which frigid water from below the ocean surface rises to replace the surface water that moves away from the beach as a result of the Coriolis effect. The rapid rip currents, cold water, and threat of sneaker waves make the ocean dangerous for casual swimmers and even those who simply want to set foot in it, especially those with no wetsuits and no lifejackets, because swimmers and even waders have been swept away and drowned. The southern portion of the beach by Sloat Boulevard has some of the cleanest water in the state.

Judah and La Playa (often called Ocean Beach) is a light rail stop that serves as the western terminus of the Muni Metro N Judah line. It is located in the Sunset District neighborhood adjacent to the Great Highway and Ocean Beach. The station has functioned as the terminus of the N Judah line since October 21, 1928.

Seal Rock (or Seal Rocks) is a group of small rock formation islands in the Lands End area of the Outer Richmond District in western San Francisco, California. They are located just offshore in the Pacific Ocean, at the north end of the Ocean Beach, near the Cliff House and Sutro Baths ruins. The name is derived from the population of Steller's sea lions (Eumetopias jubatus) and California sea lions (Zalophus californianus), who haul out on the rock. Both species are often colloquially called "seals". The formations and wildlife are protected within the Golden Gate National Recreation Area.

Lyman Stewart was a steam tanker built in 1914 by Union Iron Works Company of San Francisco for the Union Oil Company of California, with intention of transporting oil and petroleum products to ports along the West Coast of the United States and Canada. The ship was named after Lyman Stewart, the president of the Union Oil Co. In October 1922 the tanker collided with another steamer, SS Walter Luckenbach, and was beached to avoid sinking but was subsequently declared a total loss.

SS Ohioan was a cargo ship built in 1914 for the American-Hawaiian Steamship Company. During World War I, she was taken over by the United States Navy and commissioned as USS Ohioan (ID-3280). Ohioan was built by the Maryland Steel Company as one of eight sister ships ordered by the American-Hawaiian Steamship Company for inter-coastal service cargo via the Panama Canal. When the canal was temporarily closed by landslides in late 1915, Ohioan sailed via the Straits of Magellan until the canal reopened in mid 1916. During World War I, USS Ohioan carried cargo, animals, and a limited number of passengers to France, and returned over 8,000 American troops after the Armistice, including the highly decorated American soldier Alvin York. After Ohioan's naval service ended in 1919, she was returned to her original owners. Ohioan's post-war career was relatively uneventful until 8 October 1936, when she ran aground near Seal Rock at the Golden Gate, the entrance to San Francisco Bay. Attempts to free the ship were unsuccessful and, because of the close proximity of the wreck to San Francisco, the grounded Ohioan drew large crowds to watch salvage operations. Angelo J. Rossi, the mayor of San Francisco, toured the wreck on 19 October. Ohioan's hulk caught fire in March 1937, and the wreck broke into two pieces in a storm in December. As late as 1939, some of Ohioan's rusty steel beams were still visible on the rocks.

Fleishhacker Pool or Delia Fleishhacker Memorial Building was a public saltwater swimming pool located in the southwest corner of San Francisco, California, United States, next to the San Francisco Zoo at Sloat Boulevard and the Great Highway. Upon its completion in 1925, it was one of the largest outdoor swimming pools in the world; it remained open for more than four decades until its closure in 1971. It was eventually demolished in 2000.

Carville, also known Carville-by-the-Sea, was an impromptu neighborhood in the late 19th and early 20th centuries in what is now the Outer Sunset District of San Francisco, California. Residents reused abandoned horsecars (horse-drawn trolleys) and, later, cable cars for housing and public buildings. Carville was located near the intersection of 47th Ave. and Lawton Streets, just south of the western end of Golden Gate Park.

Playland (also known as Playland at the Beach and Whitney's Playland beginning in 1928) was a 10-acre (40,000 m2) seaside amusement park located next to Ocean Beach, in the Richmond District at the western edge of San Francisco, California along Great Highway where Cabrillo and Balboa streets are now. It began as a collection of amusement rides and concessions in the late 19th century and was known as Chutes at the Beach as early as 1913. It closed Labor Day weekend in 1972.

The Roald Amundsen Memorial by Sigvald Asbjørnsen is installed in San Francisco's Golden Gate Park, in the U.S. state of California.