Calabarzon, sometimes referred to as Southern Tagalog and designated as Region IV‑A, is an administrative region in the Philippines. The region comprises five provinces: Batangas, Cavite, Laguna, Quezon, and Rizal; and one highly urbanized city, Lucena. It is the most populous region in the Philippines, according to the Philippine Statistics Authority (PSA), having over 16.1 million inhabitants in 2020, and is also the country's second most densely populated after the National Capital Region. It is situated southeast of Metro Manila, and is bordered by Manila Bay and South China Sea to the west, Lamon Bay and the Bicol Region to the east, Tayabas Bay and the Sibuyan Sea to the south, and Central Luzon to the north. It is home to places like Mount Makiling near Los Baños, Laguna, and Taal Volcano in Batangas. Calamba City is the regional center while Antipolo is the most populous city in the region.
Laguna de Bay, also known as Laguna Lake and alternatively spelled "Laguna de Bae", is the largest lake in the Philippines. It is located southeast of Metro Manila, between the provinces of Laguna to the south and Rizal to the north. A freshwater lake, it has a surface area of 911–949 km2, with an average depth of about 2.8 meters and an elevation of about one meter above sea level. The lake is shaped like a crow's foot, with two peninsulas jutting out from the northern shore and filling the large volcanic Laguna Caldera. In the middle of the lake is the large island of Talim.
The Pasig River is a water body in the Philippines that connects Laguna de Bay to Manila Bay. Stretching for 25.2 kilometers (15.7 mi), it bisects the Philippine capital of Manila and its surrounding urban area into northern and southern halves. Its major tributaries are the Marikina River and San Juan River. The total drainage basin of the Pasig River, including the basin of Laguna de Bay, covers 4,678 square kilometers (1,806 sq mi).
Bay, officially the Municipality of Bay, and colloquially known as Bae, is a 2nd class municipality in the province of Laguna, Philippines. According to the 2020 census, it has a population of 67,182 people.
Calauan, officially the Municipality of Calauan, is a 2nd class municipality in the province of Laguna, Philippines. The municipality has a land area of 25.25 square miles which constitutes 3.41% of Laguna's total area. According to the 2020 census, it has a population of 87,693 people.
Lumban, officially the Municipality of Lumban, is a 3rd class municipality in the province of Laguna, Philippines. According to the 2020 census, it has a population of 32,330 people.
Pangil, officially the Municipality of Pangil, is a 4th class municipality in the province of Laguna, Philippines. According to the 2020 census, it has a population of 25,026 people.
Santa Cruz, officially the Municipality of Santa Cruz, is a 1st class municipality and capital of the province of Laguna, Philippines. According to the 2020 census, it has a population of 123,574 people.
Cabuyao, officially the City of Cabuyao, is a 1st class component city in the province of Laguna, Philippines. According to the 2020 census, it has a population of 355,330 people.
Tanay, officially the Municipality of Tanay, is a 1st class municipality in the province of Rizal, Philippines. According to the 2020 census, it has a population of 139,420 people.
General Mariano Alvarez, officially the Municipality of General Mariano Alvarez and often shortened as GMA, is a 1st class municipality in the province of Cavite, Philippines. According to the 2020 census, it has a population of 172,433 people.
Jalajala, officially the Municipality of Jalajala, is a 4th class municipality in the province of Rizal, Philippines. According to the 2020 census, it has a population of 34,017 people, making it the least populated municipality in the province.
Pulilan, officially the Municipality of Pulilan, is a 1st class municipality in the province of Bulacan, Philippines. According to the 2020 census, it has a population of 108,836 people.
Lopez, officially the Municipality of Lopez, is a 1st class municipality in the province of Quezon, Philippines. According to the 2020 census, it has a population of 94,657 people.
The Tagalog people are an Austronesian ethnic group native to the Philippines, particularly the Metro Manila and Calabarzon regions and Marinduque province of southern Luzon, and comprise the majority in the provinces of Bulacan, Bataan, Nueva Ecija, Aurora, and Zambales in Central Luzon and the island of Mindoro.
The Marikina River is a river in eastern Metro Manila, Philippines. It is the largest tributary of the Pasig River, with headwaters located in the Sierra Madre Mountains in Rodriguez, Rizal province.
In early Philippine history, the Tagalog settlement at Tondo, sometimes referred to as the Kingdom of Tondo, was a major trade hub located on the northern part of the Pasig River delta on Luzon island. Together with Maynila, the polity (bayan) that was also situated on the southern part of the Pasig River delta, Tondo had established a shared monopoly on the trade of Chinese goods throughout the rest of the Philippine archipelago, making it an established force in trade throughout Southeast Asia and East Asia.
Quezon, officially the Province of Quezon, is a province in the Philippines located in the Calabarzon region on Luzon. Kalilayan was the first known name of the province upon its creation in 1591. Around the middle of the 18th century, it was changed to Tayabas. In 1946, in recognition of the second president of the Philippines, Manuel L. Quezon, the name of Tayabas Province was changed to Quezon. Lucena, the provincial capital, the seat of the provincial government, and the most populous city of the province, is governed independently from the province as a highly urbanized city. To distinguish the province from Quezon City, it is sometimes called Quezon Province, a variation of the province's official name.
In early Philippine history, barangay is the term historically used by scholars to describe the complex sociopolitical units that were the dominant organizational pattern among the various peoples of the Philippine archipelago in the period immediately before the arrival of European colonizers. Academics refer to these settlements using the technical term "polity", but they are usually simply called "barangays".
The Upper Marikina River Basin Protected Landscape is a protected area in the Province of Rizal in the Philippines, which forms the upper area of the drainage basin of the Marikina River.
