Venues
1930: The 1930 World Cup was held entirely in one city — Uruguay's capital Montevideo. Three stadiums from the city hosted the event: the Estadio Centenario, the Pocitos and Parque Central stadiums.
2014: The 2014 World Cup will be held in 12 Brazilian cities: Rio de Janeiro, Brasilia, Sao Paulo, Recife, Fortaleza, Belo Horizonte, Porto Alegre, Salvador, Cuiaba, Manaus, Curitiba and Natal

Unfinished Stadiums
1930: Montevideo's showcase stadium, the Estadio Centenario, was not ready when the World Cup started and hosted its first match only five days into the tournament. The Pocitos and Parque Central stadiums were the other stadiums which played host to a few matches.
2014: While most of the World Cup stadiums were ready on time, some stadiums like Sao Paulo's Corinthians Arena where Brazil will take on Croatia on Thursday are still undergoing finishing touches. As of mid-May, two other stadiums — in Cuiaba and Curitiba — were still under construction.