Puente de San Martín (Toledo)
Spain · Europe
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The Puente de San Martín (English: St Martin's Bridge) is a medieval bridge across the river Tagus in Toledo, Spain. The Puente de San Martín features five arches, with the largest in the middle having a span of 40 meters. Only very few bridges in the world were that long at the time of its construction.
Adapted from Wikipedia (CC BY-SA). Photography via Wikimedia Commons.