San Gabriel Valley in the context of "City limits"

Los Angeles (LA) is the most populous city in the U.S. state of California, and the commercial, financial, and cultural center of Southern California. With an estimated 3.88 million residents within the city limits as of 2024, it is the second-most populous city in the United States, behind New York City. Los Angeles has an ethnically and culturally diverse population, and is the principal city of a metropolitan area of 12.9 million people (2024). Greater Los Angeles, a combined statistical area that includes the Los Angeles and Riverside–San Bernardino metropolitan areas, is a sprawling metropolis of over 18.5 million residents.

The majority of the city proper lies in the Los Angeles Basin adjacent to the Pacific Ocean in the west and extending partly through the Santa Monica Mountains and north into the San Fernando Valley, with the city bordering the San Gabriel Valley to its east. It covers about 469 square miles (1,210 km), and is the county seat and most populated city of Los Angeles County, which is the most populous county in the United States with an estimated 9.86 million residents as of 2022. It is the third-most visited city in the U.S. with over 2.7 million visitors as of 2023.

In Buddhism, an Arhat (Sanskrit: अर्हत्) or Arahant (Pali: अरहंत्, 𑀅𑀭𑀳𑀦𑁆𑀢𑁆) is one who has gained insight into the nature of existence, has achieved Nirvana, and has been liberated from the endless cycle of rebirth.

The understanding of the concept has changed over the centuries, and varies between different schools of Buddhism and different regions. A range of views on the attainment of arhats existed in the early Buddhist schools. The Sarvāstivāda, Kāśyapīya, Mahāsāṃghika, Ekavyāvahārika, Lokottaravāda, Bahuśrutīya, Prajñaptivāda, and Caitika schools all regarded arhats as imperfect in their attainments compared to buddhas.

The Los Angeles Basin is a sedimentary basin located in Southern California, in a region known as the Peninsular Ranges. The basin is also connected to an anomalous group of east–west trending chains of mountains collectively known as the Transverse Ranges. The present basin is a coastal lowland area, whose floor is marked by elongate low ridges and groups of hills that is located on the edge of the Pacific plate. The Los Angeles Basin, along with the Santa Barbara Channel, the Ventura Basin, the San Fernando Valley, and the San Gabriel Basin, lies within the greater Southern California region. The majority of the jurisdictional land area of the city of Los Angeles physically lies within this basin.

On the north, northeast, and east, the lowland basin is bound by the Santa Monica Mountains and Puente, Elysian, and Repetto hills. To the southeast, the basin is bordered by the Santa Ana Mountains and the San Joaquin Hills. The western boundary of the basin is marked by the Continental Borderland and is part of the onshore portion. The California borderland is characterized by northwest trending offshore ridges and basins. The Los Angeles Basin is notable for its great structural relief and complexity in relation to its geologic youth and small size for its prolific oil production. Yerkes et al. identify five major stages of the basin's evolution, which began in the Upper Cretaceous and ended in the Pleistocene. This basin can be classified as an irregular pull-apart basin accompanied by rotational tectonics during the post-early Miocene.

In Buddhism, an Arhat (Sanskrit: अर्हत्) or Arahant (Pali: अरहंत्, 𑀅𑀭𑀳𑀦𑁆𑀢𑁆) is one who has gained insight into the nature of existence, has achieved nirvana, and has been liberated from the endless cycle of rebirth.

The understanding of the concept has changed over the centuries, and varies between different schools of Buddhism and different regions. A range of views on the attainment of arhats existed in the early Buddhist schools. The Sarvāstivāda, Kāśyapīya, Mahāsāṃghika, Ekavyāvahārika, Lokottaravāda, Bahuśrutīya, Prajñaptivāda, and Caitika schools all regarded arhats as imperfect in their attainments compared to buddhas.

The San Rafael Hills are a mountain range in Los Angeles County, California. They are one of the lower Transverse Ranges, and are parallel to and below the San Gabriel Mountains, adjacent to the San Gabriel Valley overlooking the Los Angeles Basin.

The Crescenta Valley is a small inland valley in Los Angeles County, California, lying between the San Gabriel Mountains on the northeast and the Verdugo Mountains and San Rafael Hills on the southwest. It opens into the San Fernando Valley at the northwest and the San Gabriel Valley at the southeast. It is nearly bisected by the Verdugo Wash, a smaller valley separating the Verdugo Mountains from the San Rafael Hills. Most of the valley lies at an elevation of over 1,500 feet (460 m).

The San Jose Hills are a part of the Transverse Ranges in eastern Los Angeles County, California, marking the border between the San Gabriel Valley and the Pomona Valley. It includes portions of Covina, West Covina, Walnut, Pomona, and San Dimas. To the south, the valley of San Jose Creek (a line followed by the Pomona Freeway) separates the San Jose Hills from the Puente Hills and Chino Hills.