Dom Luís I Bridge Overlooking the Douro River in Porto, Portugal

Spanning the Douro River at Porto's historic core, this iconic bridge connects the city to Vila Nova de Gaia across the water. Its impressive iron arch design is both an engineering marvel of its time (completed circa 1876) and a UNESCO World Heritage Site. Pedestrians stroll along the bridge’s walkway enjoying panoramic views while cars traverse below. Alongside flows the river where traditional Rabelo boats navigate between the quayside cafes that line the waterfront, under a sky dotted with clouds against the backdrop of terracotta rooftops and lush green hillsides.