Which area in Manila is known as an ilustrado territory and enclave of the rich?

The area in Manila known as an ilustrado territory and enclave of the rich is Binondo. Historically, Binondo has been significant as one of the oldest Chinatown communities in the world, where wealthy Chinese merchants and their families established a thriving economic and cultural base. This area became synonymous with the ilustrados, or educated Filipinos during the Spanish colonial period, who were often involved in reform movements and sought to promote education and civil rights for Filipinos.

The term "ilustrado" refers specifically to the educated elite who played a crucial role in advocating for social and political reforms. Binondo's historical significance in terms of commerce and education has made it a center for the upper class over the years, contrasting with neighborhoods that are more associated with lower socioeconomic statuses.

The other options, such as Quiapo and Tondo, are known for their vibrant local markets and lower-income communities, which do not align with the idea of being an enclave of the rich. Manila Bay represents a geographical feature rather than a specific community associated with wealth or the ilustrado class. Thus, the context of Binondo as a historical and cultural hub of affluent families aligns perfectly with the question's focus on an ilustrado territory.