https://youtu.be/1JA5CyPAl8U Mount Diablo is a mountain of the Diablo Range, in Contra Costa County of the eastern San Francisco Bay Area in Northern California. It is south of Clayton and northeast of Danville. It is an isolated upthrust peak of 3,849 feet (1,173 meters), visible from most of the San Francisco Bay Area. Mount Diablo appears from many angles to be a double pyramid and has many s..

https://youtu.be/rgqxzOTAloM 4 parks Russian Ridge to Black Mountain and back via Skyline Ridge, La Honda, CA . RUSSIAN RIDGE PRESERVE - This 3,137-acre preserve known for its showy display of wildflowers in spring. In summer, the hills turn to gold with the late evening sunlight. Autumn, when the fog recedes, is the ideal time to enjoy the ridge views of San Francisco Bay and the Santa Cruz Mou..

https://youtu.be/zWtU6MVIfqk Sweeney Ridge, is a 1,200-acre (5 km2) hilly hiking area of ridges and ravines between San Bruno and Pacifica, California, about a 25-minute drive south from San Francisco. The ridge's 1,200-foot-high summit, covered with coastal scrub and grassland, slopes down to San Francisco Bay on the east and to the Pacific Ocean on the west. The ridge is part of the Golden Gat..

https://youtu.be/Z9UOVWH9VCM Windy Hill Open Space Preserve is a regional park located in San Mateo County, California and operated by the Midpeninsula Regional Open Space District (MROSD). It is readily identifiable from the flatlands of the South Bay, as it is the only "naked" part of the peninsula range (not forested). . The Windy Hill Preserve comprises an important 1132 acre (4.6 km2) stret..

https://youtu.be/YEe5zDQKvLk It is awesome atop this 2,500-foot high mountain in Marin with its 360-degree view from San Francisco Bay to the Pacific. But anywhere on "Tam" you can find nature at its most glorious. Miles and miles of trails ribbon the mountain, crossing redwood valleys, creeks, waterfalls, and wide-open grasslands. It has been treasured turf for hikers, cyclists, and equestrians..

https://youtu.be/uGvFIUliqt0 [Angel Island] . 이민자가 만든 나라 미국은 독립 후 첫 100년 동안 유럽인 이민을 아무런 규제 없이 받아들이는 무제한 개방정책을 펼쳤습니다. 이민자들이 점점 증가하자 다양한 이유로 이민을 규제하기 시작했습니다. 1875년 범죄자와 매춘부들의 이민을 제한하는 규정이 시행되었습니다. 1882년에는 이민법을 만들어 범죄자와 정신질환자, 생활보호 대상 가능성이 있는 사람들에 대해 이민을 제한함과 동시에 중국인배제법을 만들어 중국인 이민을 막았습니다. . 미국 역사상 최초로 이민을 규제한 법이었습니다. 중국인 노동자들은 입국이 금지됐고 미국 시민권 취득도 제한됐습니다. 특정 국가 출신이라는 이유로 이민을 금지한 이 법은 1943년 폐지될 때까지 ..

https://youtu.be/8POt9PJMa2w The Dumbarton Bridge is the southernmost of the highway bridges across San Francisco Bay in California. Carrying over 70,000 vehicles and about 118 pedestrian and bicycle crossings daily (384 on weekends), it is the shortest bridge across San Francisco Bay at 1.63 miles (8,600 ft; 2,620 m). Its eastern end is in Fremont, near Newark in the San Francisco Bay National ..

https://youtu.be/rPqObbRdlb8 Windy Hill Open Space Preserve is a regional park located in San Mateo County, California[1] and operated by the Midpeninsula Regional Open Space District (MROSD). It is readily identifiable from the flatlands of the South Bay, as it is the only "naked" part of the peninsula range (not forested). The Windy Hill Preserve comprises an important 1132 acre (4.6 km2) stre..

. Sweeney Ridge, is a 1,200-acre (5 km2) hilly hiking area of ridges and ravines between San Bruno and Pacifica, California, about a 25-minute drive south from San Francisco. The ridge's 1,200-foot-high summit, covered with coastal scrub and grassland, slopes down to San Francisco Bay on the east and to the Pacific Ocean on the west. The ridge is part of the Golden Gate National Recreation Area...