
La Pampa spurs on the Argentina national football team. Photo on Flickr from the Ministry of National Culture (CC BY-SA 2.0).
The last time that Argentina reached the final of the World Cup was 1990, when the tournament took place in Italy and West Germany was crowned the champion.
After winning against the Netherlands in a penalty shootout 4-2 on July 9, Argentina will advance to the final once again and dual Germany for the title on Sunday, July 13 in the Estádio Jornalista Mário Filho, better known as the Maracanã.
Esteban Blog summarised the match like this:
Un partido con historia de finales se avecina, con Alemania demoledora en el 1-7 ante los dueños de casa, en que a Brasil le faltó el alma que hoy a argentinos y holandeses les sobró.
A match with a rich tradition of finals approaches, with Germany demolishing the host 7-1, during which Brazil lacked the heart that the Argentines and the Dutch had in excess.
The most iconic locations in Argentina were transformed into party venues and, unsurprisingly, the Argentines at Brazil's Copacabana Beach also celebrated:
La fiesta Argentina en Copacabana via @JornalOGlobo http://t.co/VbEnEFeqPB #ArgentinaALaFinal pic.twitter.com/6FMCWVd78r
— Gustavo Papasergio (@gpapasergio) July 10, 2014
The Argentina party at the Copacabana via @JornalOGlobo http://t.co/VbEnEFeqPB
In the city of Buenos Aires, the meeting point was the Obelisk, where the celebrations extended into the night:

Image from the Facebook account of Juan Pablo Paradelo.
In the city of Rosario, where Lionel Messi, Ángel di María and Maxi Rodríguez, three players from the Argentinian squad, were born, residents celebrated like this:

Photo from the Facebook account of Rosario3.
And this is how everyone celebrated in Villaguay, in the province of Entre Ríos:

Photo from the Facebook account of José Luis Raota.
There was a variety of trending hashtags on Twitter in the aftermath, such as #ArgentinaALaFinal (Argentina to the final), #EstamosEnLaFinal (We're finalists), #AlaFinal (To the final) and #SiElDomingoGanamos (If we win on Sunday):
#SiElDomingoGanamos El País va a volver a estar de Fiesta!
— El Team SanCe XIII (@NicoKaiserr) July 10, 2014
#IfWeWinOnSunday The Country will be Partying again!
#SiElDomingoGanamos no falto mas al colegio, tengo muchas faltas
— Jota esse-* (@Flaaa9) July 10, 2014
#IfWeWinOnSunday I'll stop missing school, I've missed loads of days
And an optimistic tweet:
#SiElDomingoGanamos saquenle el ‘si’ porque es “EL DOMINGO GANAMOS”
— LPDLC#2 (@MartuBisconti) July 10, 2014
#IfWeWinOnSunday get rid of the ‘if’ because it should be “WE (WILL) WIN ON SUNDAY
The Argentines want revenge, and now they only need to wait until Sunday:
Alemania, estudiate videos, papelitos, pero sabés qué? tenemos una cuenta pendiente! #EstamosEnLaFINAL
— Silvina Manzi (@silvinamanzi) July 9, 2014
Germany, look at your videos, notes, but you know what? there's unfinished business between us!