Spaniards eat a grape with each of the twelve chimes of the midnight countdown while making a wish. The tradition dates back to 1895 when some savvy vine farmers realized they had a surplus of grapes and started the tradition to get more customers.
Many then celebrate with a late-night family dinner before heading out to Spanish nightclubs after midnight until 6 AM.
In Belgium, children write New Year's letters to their parents.
In Belgium, New Year's Eve is calledSint Sylvester Vooranvond.Besides toasting with the customary champagne, Belgian children write New Year's letters to their parents or godparents on New Year's day.
They decorate the cards with fancy paper complete with cherubs, angels, and colored roses and then read them aloud.
In Greece, people hang an onion on their doors.
It's believed that hanging an onion, or "kremmida" on your door on New Year's eve as a symbol of rebirth in the coming year. The following morning, parents traditionally tap their children on the head with the kremmida to wake them up before church.
Greeks also commonly break a pomegranate on their doorstep before entering their houses on New Year's Day, another symbol of prosperity and good luck.
In Denmark, people eat a really huge cake...and throw dishes.
People in Denmark prepare an evening meal that ends with a special dessert known as Kransekage, a steep-sloped cone-shaped cake decorated with fire crackers and flags.
Also, it is thought that throwing dishes on someone's doorstep on January 1st assures they will have many friends in the year ahead.
In Japan, it is believed the God of the New Year comes down to Earth.
On New Year's Eve in Japan, Buddhist temples ring their bells 108 times to welcome Toshigami, the New Year's God.
The Japanese also clean their homes and send thank-you cards called nengajo that wish a Happy New Year and give thanks to friends and relatives.
In Estonia, they eat up to 12 meals that night.
Some people in Estonia believe that they should eat seven, nine, or twelve meals on New Year's Eve. With each meal consumed, it is believed that the person gains the strength of that many men the following year.
You don't eat the entire meal, however — part of the meal is left unfinished for the spirits or ancestors who visit the house on New Year's Eve.
In Finland, people tell one another's fortunes with melted "tin."
A Finnish new year tradition is called molybdomancy, which is the act of telling New Year's fortunes by melting "tin" (actually lead) in a tiny pan on the stove and then quickly throwing it into a bucket of cold water.
The blob of metal is then analyzed in the candlelight to see what fate will befall the person in the New Year.
In Ireland, women put mistletoe leaves under their pillows to find husbands.
Single women of Ireland place sprigs of mistletoe under their pillows on New Year's night in the hope that it will bring them better luck and a future husband.
Also according to Irish superstition, be wary of who enters your home after the 31st — if the visitor is a tall, dark handsome man, your year will bring good fortune. If it's a red-headed woman, she will bring a lot of trouble.
In Germany, they eat pigs made of marzipan and watch TV.
The German people eat jam-filled doughnuts made with or without liquor fillings on New Year's Eve, as well as a tiny marzipan pig as a token of good luck.
The entire country also loves to watch the 1920s British Cabaret play Dinner For One that is broadcast on German television stations in black and white each year.
In China, New Year's rituals include cleaning and buying presents.
Though celebrations to honor the Gregorian New Year are held in major Chinese cities such as Hong Kong and Shanghai, the Chinese Lunar New Year or the "Spring Festival" does not happen until late January or early February.
Traditions vary across China, but many include cleaning the Chinese people cleaning their homes to get rid of bad luck, buying presents for loved ones, and children receiving money in red paper envelopes.
In Serbia, New Year's Eve is like Christmas.
New Year's Eve is celebrated like Christmas in Serbia, where it is believed Santa Clause (or Deda Mraz) visits houses to leave presents under the family spruce tree.
The population then celebrates the "Serbian New Year" on January 13, according to the Julian calendar.
In Iran, the first day of Spring marks the beginning of the New Year.
The "Persian New Year" or Nowruz marks the first day of spring and the beginning of the year for the Iranian calendar.
Preparation for Nowruz begins in the last winter month of the Persian solar calendar, and symbolizes the rebirth of the god of sacrifice, Domuzi. A man dressed as Domuzi has his face painted black and dances through the streets with tambourines and trumpets dressed all in red to symbolize good luck.