It originated from the community of the early Christians on the southeastern coast of Batangas (within the vicinity of present-day Lobo).

[9] The Moro or pirate raids forced the inhabitants of the settlement to the safety of the ravine and forest on the north-west bank of Kansahayan River—in Hilerang Kawayan—now a barangay in the municipality of Taysan called Pinagbayanan (transl.

[10] This town was further moved by the Dominican priests and headed farther north holding a novena and praying the rosary in the process of their flight.

[9] On the 9th night of the novena, the fleeing inhabitants reached the river bank of Tubig ng Bayan (lit.

Living in peace and prosperity, the grateful town's people erected a stone church south of the river bank in honor of their benefactress, the Our Lady of the Most Holy Rosary.

In the early American military occupation of Santo Rosario, a cavalry officer, Captain Daniel H. Boughton,[12] came upon the big spring at the foot of Tombol Hill.

[9] Official records show that on June 9, 1902, a council of prominent citizens of the town met under a mango tree beside Tombol Spring.

During the final years of Spanish rule, under the Recollect priests, Rosario served as the center of civilization in this part of Batangas.

This is similar to Spanish, once widely spoken and also used as the primary formal medium of instruction in schools during the colonial era.

[36] After the 1991 eruption of Mount Pinatubo, an Aeta Tribal Community has been inhabiting in Barangay Puting Kahoy.

Alongside these individual efforts, commercial livestock farms also play a role in the agricultural landscape of Rosario.

Fast food restaurants mostly prefer Rosario for their first store within the 4th district along with Seattle's Best's very first drive thru in the Philippines, found in Barangay Namunga.

[47] Industrial establishments in the municipality are mostly agri-based, while the Puyat Steel Corporation is an ISO 9002-certified galvanizing plant manufacturing world-class iron sheets.

Niño Formation and Science School also known as SNFSS is a private educational institution located in Rosario, Batangas.

The Lipa-Rosario Road segment of N435 northward gives access to municipality of Padre Garcia, Lipa City, and Metro Manila; while the Rosario-Ibaan Road segment of N435 westward gives access to municipality of Ibaan, Batangas City, and also Metro Manila via STAR Tollway.

Intersecting eastward is Gualberto Avenue that gives access to the municipality of San Juan, Lucena City, and all the way to Bicol Region.

Jeepneys not from a terminal plying from Lipa City to San Juan, Batangas also pass by Rosario via the Gualberto Avenue.

[2] Kalamay is not just a popular snack in Rosario[68] but also a vital part of traditional Batangas wedding or baysanan along with suman.

The ninongs and ninangs or the principal sponsors and even some relatives and friends are called to give cash gifts or sabog.

Principal sponsors get to receive a basket of goodies with the suman in it plus primal cuts of meat collectively called sabit.

Good Friday starts early in the morning with Penitensyahan, a notable procession in Rosario which includes higantes.

A more traditional long procession is held at night that features images of Jesus, Mama Mary, and various saints.

[2] Pagbati in Rosario is traditionally composed of three young ladies dancing to the tune of a local brass band.

[2] Founded on resilience and adaptability, Rosario invites visitors to explore its unique narrative, transcending the conventional tourist destinations associated with coastal towns.

While the town may not showcase traditional heritage sites due to its historical relocations, it compensates with an array of lesser-known yet equally captivating tourist spots.