Constructed in Troy, New York, this iron structure was shipped down the Hudson River to the Atlantic. It then ventured around the Cape Horn of South America, arriving in the San Francisco Bay. From there, the bridge was moved up the Sacramento and Feather Rivers. The journey covered around 18,000 nautical miles, with a team of oxen hauling it the final 30 miles. When completed in 1855, it was California’s first suspension bridge.