The architecture, with its distinct balconies and building style, strongly suggests a Mediterranean or Southern European urban environment. The blue square sign with a white arrow is a standard European traffic sign. The yellow bus approaching indicates a public transport system common in many European cities. The overall atmosphere and tree-lined street feel very characteristic of Portugal. I suspect this is in Lisbon.

I am 60% sure.

then: forward

The yellow bus with the specific design and the "1921" inscription on the building facade are strong indicators. The pavement style, known as *calçada portuguesa*, is a hallmark of Portugal. The overall urban architecture and the specific shade of green on the building confirm my suspicion of Lisbon. I am now 85% sure this is in Lisbon.

then: guess