Madrid is the focus of that fiercest of Span?­?­ish customs, the bullfight, and local ferias and fiestas like San Isidro, a celebration of the city's patron saint, are prepared and attended with the same zeal that they are in small Spanish towns.
The San Isidro celebrations are always attended by large numbers of people. 
mnli hypothesis: The San Isidro celebrations are always attended by large numbers of people.  premise: Madrid is the focus of that fiercest of Span?­?­ish customs, the bullfight, and local ferias and fiestas like San Isidro, a celebration of the city's patron saint, are prepared and attended with the same zeal that they are in small Spanish towns.