Sondrio | Alpine Valley, Lombardy, Valtellina | Britannica
https://www.britannica.com/place/Sondrio-Italy
WEBMar 7, 2024 · Sondrio, city, Lombardia (Lombardy) regione, northern Italy; it is the chief town of the Valtellina (the upper Adda River valley), near the mouth of the Mallero River, and lies at an elevation of 1,017 feet (310 m), north of Bergamo. It has an archaeological museum, and its old castle, Castello.
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