The Budapest Chain Bridge or, rather, the Széchenyi Chain Bridge. The first permanent bridge to span the Danube, opened in 1849. I'm sure for the people of Budapest who travel it every day, it's just another bridge, yadda yadda. But for me, driving across it on the way into the city last night, it was a real kick. Click to embiggen.
Per Wiki, "(t)he bridge is named after István Szécheny, a major supporter of its construction. At the time of its construction, it counted as a wonder of the world. It had an enormous significance in the country's economics and life. Its decorations made of cast iron, and its construction, radiating calm dignity and balance, raised it among the most beautiful industrial monuments in Europe. It became a symbol of advancement, national awakening, and the linkage between East and West."
[Image pinched from Wiki Commons]