Rakotz bridge - Kromlau, Germany
Though it appears to be medieval, this bridge was built in the 1860′s. Its reflection in the river below creates the illusion of a full circle bridge, regardless of where you are viewing it from. The bridge itself is made from basalt and boulders, and sits in a a picturesque rhododendron park, that comes into full bloom in May. The bridge is the most popular attraction in Kromlau, and is a favourite of photographers.