Which iconic architectural structure is located in San Francisco, USA?

The Golden Gate Bridge, a suspension bridge completed in 1937, spans San Francisco Bay, symbolizing American engineering excellence. Studying this highlights its role as a global landmark, the challenges of large-scale infrastructure projects, and its impact on tourism and connectivity. For Pakistan, this provides lessons on developing iconic infrastructure, such as motorways or bridges, to boost tourism and economic connectivity, particularly through CPEC-linked projects like Gwadar Port.