Discover how a 2,000-year-old Celtic tradition became a worldwide celebration of costumes, candy and pumpkins — and how Halloween found its place in Argentine culture.

BUENOS AIRES, ARGENTINA — October 31, 2026 — Halloween, celebrated every October 31, has become one of the world's most recognizable holidays. Known for its costumes, carved pumpkins, spooky decorations and trick-or-treating, the celebration is especially popular in the United States but has gradually expanded to countries around the world, including Argentina.

Although Halloween is often associated with American culture, its origins date back approximately 2,000 years to an ancient Celtic festival called Samhain.

Over the centuries, the celebration evolved through European folklore, religious traditions and immigration before becoming the entertainment-focused holiday recognized today.

In Argentina, Halloween has gained popularity since the late 1990s, particularly among children, teenagers and young adults. Shopping centers, businesses and entertainment venues now organize themed activities, costume parties and candy giveaways.

The Ancient Celtic Origins of Halloween

Halloween traces its earliest roots to Samhain, a festival celebrated by Celtic communities in areas that are now Ireland, the United Kingdom and northwestern France.

The festival marked the end of the harvest season and the beginning of winter, a period associated with shorter days, colder temperatures and preparations for the months ahead.

Ancient Celtic traditions also connected Samhain with supernatural beliefs.

According to historical accounts and folklore, people believed the boundary between the living and the dead became less distinct during this period, allowing spirits to return to the human world.

Some traditions described deceased relatives visiting their former homes, while others involved supernatural beings wandering among the living.

Bonfires were reportedly lit during seasonal gatherings, and disguises eventually became associated with attempts to avoid recognition by wandering spirits.

However, historians note that relatively few contemporary written records survive, making it difficult to establish precisely how ancient Celtic communities celebrated Samhain.

How Samhain Became Halloween

Halloween's name developed through its association with Christian observances.

November 1 is All Saints' Day, traditionally dedicated to honoring saints, while November 2 is All Souls' Day, a time for remembering the deceased.

The evening before All Saints' Day became known as All Hallows' Eve, an expression that gradually evolved into Halloween.

Over time, older seasonal traditions and later European customs influenced the development of the holiday.

Although modern Halloween includes elements associated with ancient folklore, it is not an unchanged continuation of Samhain.

Instead, it reflects centuries of cultural transformation.

Where Did Trick-or-Treating Come From?

One of Halloween's most familiar traditions is trick-or-treating, when children dress in costumes and visit homes or participating businesses asking for candy.

The custom has connections to older European practices.

In parts of Britain and Ireland, people once visited homes requesting small cakes known as soul cakes, sometimes offering prayers for deceased relatives in return.

Other traditions involved singing, dancing or performing in exchange for food and drinks.

These practices helped establish the idea of visiting neighbors and receiving treats.

In the United States, the tradition eventually developed into the modern custom of children carrying candy bags or pumpkin-shaped containers and asking, “Trick or treat?”

Today, the activity is primarily associated with family entertainment and community participation.

Why Pumpkins Became Halloween's Most Famous Symbol

Carved pumpkins, known as jack-o'-lanterns, are among Halloween's most recognizable decorations.

However, pumpkins were not originally used for these lanterns.

In Ireland and Scotland, people traditionally carved vegetables such as turnips to create lanterns associated with supernatural folklore.

The custom is commonly linked to the Irish legend of Stingy Jack, a man who was supposedly condemned to wander the earth carrying a small light.

When Irish immigrants brought their traditions to North America, pumpkins became a popular alternative because they were larger and easier to carve.

Over time, illuminated pumpkins became an essential part of Halloween decorations.

Today, they appear alongside artificial cobwebs, skeletons, ghosts, witches and other spooky displays.

How Halloween Became Popular in the United States

Halloween became firmly established in the United States during the nineteenth century, particularly as Irish immigrants brought their customs and folklore to American communities.

As these traditions spread, Halloween gradually developed into a neighborhood celebration.

By the twentieth century, costume parties, candy distribution and children's activities had become increasingly popular.

Businesses also recognized the holiday's commercial potential.

Retailers began offering costumes, decorations and seasonal candy, while movies and television helped popularize Halloween imagery.

The celebration eventually expanded beyond children's activities to include adult costume parties, haunted attractions and elaborate home decorations.

Today, Halloween is a major cultural and commercial event in the United States, influencing celebrations in many other countries.

When Did Halloween Arrive in Argentina?

Halloween began gaining broader visibility in Argentina during the late 1990s and early 2000s.

Before that period, celebrations were largely limited to English-language schools, bilingual institutions, expatriate communities and private gatherings.

The expansion of cable television, American movies and English-language education helped introduce Halloween to a wider Argentine audience.

Children became familiar with the holiday through animated programs and films featuring costumes, candy and decorated neighborhoods.

Schools also incorporated Halloween activities into English-language lessons, helping students learn vocabulary while exploring cultural traditions.

As awareness increased, businesses and entertainment venues began organizing their own events.

What had once been a relatively unfamiliar celebration gradually became part of the entertainment calendar in major Argentine cities.

Halloween 2026: How Argentina Celebrates Today

In Argentina, Halloween has developed a predominantly recreational and commercial identity.

Children and teenagers participate in costume activities, while young adults attend themed parties organized by bars, clubs and entertainment venues.

Popular costumes include witches, vampires, zombies, ghosts, superheroes and characters from movies or television.

Shopping centers and neighborhood businesses also participate by decorating their spaces and distributing candy.

According to the original report published October 31, 2026, several commercial centers were preparing candy giveaways for Saturday's celebration.

These organized events offer families an alternative to traditional door-to-door trick-or-treating, which is less widespread in Argentina than in the United States.

For businesses, Halloween creates opportunities to attract visitors through themed decorations, seasonal promotions and family-friendly activities.

For participants, it provides an occasion to enjoy costumes, creativity and social gatherings.

Halloween and Argentina's Traditional Remembrance Customs

Although Halloween has become increasingly visible in Argentina, it remains distinct from traditional religious and commemorative observances.

All Saints' Day and All Souls' Day, observed on November 1 and 2, are associated with remembering saints and deceased loved ones.

In parts of the Andean region, these dates carry particular cultural and spiritual importance.

Halloween, by contrast, is generally celebrated in Argentina as an entertainment-focused occasion rather than a religious observance.

Its popularity reflects the influence of international media, cultural exchange and changing social traditions.

The celebrations may share historical associations with death and remembrance, but they have different meanings and customs.

Why Halloween Continues to Grow in Argentina

Several factors have contributed to Halloween's increasing popularity.

American entertainment introduced the holiday to Argentine audiences, while English-language schools helped familiarize children with its traditions.

Social media has also made costumes, decorations and themed activities more visible.

Businesses have responded by offering Halloween merchandise, organizing events and creating seasonal promotions.

Another reason for the holiday's appeal is its flexibility.

Children can enjoy candy and costumes, teenagers can participate in themed gatherings, and adults can attend parties or decorate their homes.

Unlike more formal celebrations, Halloween allows participants to express their creativity in different ways.

This adaptability has helped the holiday establish a recognizable presence in Argentina's urban entertainment culture.

From Ancient Samhain to Halloween 2026

Halloween's transformation across more than two millennia reflects the influence of different cultures and historical periods.

PeriodMajor developmentAncient Celtic eraSamhain marks the transition from harvest to winterMedieval EuropeAll Hallows' Eve and related religious traditions developNineteenth-century AmericaIrish immigration helps spread Halloween customsTwentieth centuryCostumes, pumpkins and trick-or-treating become widely popularLate 1990s–2000s ArgentinaHalloween gains visibility through television, films and education2026 ArgentinaShopping centers, businesses and entertainment venues organize celebrations

The holiday's history demonstrates how customs can evolve while retaining recognizable elements of their origins.

Final Thoughts: Halloween's Journey From Celtic Folklore to Argentina

Halloween has traveled a remarkable cultural journey.

What began as a seasonal festival associated with ancient Celtic communities gradually evolved into an international celebration featuring costumes, pumpkins, candy and entertainment.

Irish immigration helped establish Halloween in the United States, where many of its modern traditions became widespread.

Movies, television and popular culture later introduced those customs to audiences around the world.

In Argentina, the celebration began gaining greater visibility toward the end of the twentieth century and has since become increasingly popular among younger generations.

Today, Halloween provides opportunities for families, businesses and communities to participate in themed activities and enjoy a tradition that continues to evolve.

Halloween 2026 demonstrates how a celebration rooted in ancient European folklore can cross borders, adapt to different cultures and become part of modern entertainment.

From the mysterious traditions of Samhain to costume parties and candy giveaways in Argentina, October 31 continues to bring together history, imagination and celebration.