Question: What medival stone bridge is a short distance from the Palazzo Pitti?

Context paragraphs:
George C. King Bridge: The George C. King Bridge (formerly known as the St. Patrick's Island Bridge and colloquially known as the Skipping Stone Bridge) is a pedestrian bridge that spans the Bow River just northeast of Downtown Calgary, Alberta, Canada.  The bridge connects the neighbourhoods of East Village to the south and Bridgeland to the north, with access from the bridge to St. Patrick's Island Park in the middle of the river.  The bridge was built by the Calgary Municipal Land Corporation (CMLC) as part of the wider redevelopment of the East Village neighbourhood, in tandem with a $45 million redevelopment of St. Patrick's Island Park.  Planning for the new bridge began in 2009, with construction getting underway in 2012.  The bridge opened on October 20, 2014.  The bridge is known locally as the Skipping Stone Bridge due to the form of the bridge, which looks like a stone skipping across the river.

Buonaccorso Pitti: Buonaccorso Pitti was a prominent Florentine merchant in the late 14th and early 15th centuries.  His family was very prestigious and his father very involved in politics.  He was a gambler and often made unsafe investments, though he managed to make money from it several times during his life.  He bought and sold horses, wine, wool, and clothing among other things.  In 1422, he was elected the Standard Bearer of Justice, Florence's highest post.  In 1401, while serving as the Florentine ambassador to Bavaria, he, his brothers, and their descendants were ennobled by Rupert, King of Germany, after having saved his life by thwarting a poisoning attempt by the Duke of Milan.  His son, Luca, built the Palazzo Pitti in Florence, but never finished it, it was given to him, but he sold it in 1549.  Buonaccorso's descendants, the Counts Buonacorsi di Pistoia, moved from Tuscany to Bavaria in the late 19th century.  The family emigrated to the U.S. in the early 20th century.

Vasari Corridor: The Vasari Corridor (Italian: "Corridoio Vasariano" ) is an elevated enclosed passageway in Florence, central Italy, which connects the Palazzo Vecchio with the Palazzo Pitti.  Beginning on the south side of the Palazzo Vecchio, it then joins the Uffizi Gallery and leaves on its south side, crossing the Lungarno dei Archibusieri and then following the north bank of the River Arno until it crosses the river at Ponte Vecchio.  At the time of construction, the corridor had to be built around the Torre dei Mannelli, using brackets, because the owners of the tower refused to alter it.  The corridor covers up part of the façade of the Church of Santa Felicita.  The corridor then snakes its way over rows of houses in the Oltrarno district, becoming narrower, to finally join the Palazzo Pitti.  Most of it is closed to visitors.

Ponte Vecchio: The Ponte Vecchio ("Old Bridge", ] ) is a medieval stone closed-spandrel segmental arch bridge over the Arno River, in Florence, Italy, noted for still having shops built along it, as was once common.  Butchers initially occupied the shops; the present tenants are jewelers, art dealers and souvenir sellers.  The Ponte Vecchio's two neighbouring bridges are the Ponte Santa Trinita and the Ponte alle Grazie.

Stone Bridge Press: Stone Bridge Press, Inc. is a publishing company distributed by Consortium Book Sales & Distribution and founded in 1989.  Authors published include Donald Richie and Frederik L. Schodt.  Stone Bridge publishes books related to Japan, having published some 90 books on a wide variety of subjects: anime and manga, calligraphy, and origami; guides on Japanese customs, culture, and aesthetics; Japanese language books, Japan-related fiction, poetry, and nonfiction.  Recently, Stone Bridge has broadened its subjects to more of Asia, and have published books on Korea and China, as well.

Palazzo Pitti: The Palazzo Pitti (] ), in English sometimes called the Pitti Palace, is a vast, mainly Renaissance, palace in Florence, Italy.  It is situated on the south side of the River Arno, a short distance from the Ponte Vecchio.  The core of the present palazzo dates from 1458 and was originally the town residence of Luca Pitti, an ambitious Florentine banker.

Old Castle Bridge: The Old Castle Bridge in Warwick, England was a late medieval bridge.  The multi-arch stone bridge was built across the River Avon a short distance south-east of the centre of Warwick town and immediately upstream of the Warwick Castle weir.  It is not clear exactly when the bridge was built, but by 1373 half the width of the bridge was said to be in ruins.  A new bridge was built upstream of the old one in the 18th century and in 1795 the old bridge was largely swept away by flood waters.

Pope Street Bridge: The Pope Street Bridge is a stone bridge carrying Pope Street over the Napa River in St. Helena, California.  Built by R. H. Pithie in 1894, the bridge is the oldest stone bridge in Napa County.  The triple arch bridge is 175 ft long and 18 ft wide and cost $14,500 to build.  The stone used to build the bridge came from a local quarry on Monticello Road near Mount George Grade.  The bridge was designed for horse-drawn vehicles but has withstood automobile traffic; it also survived the 1906 San Francisco earthquake without damage.

Ninth Street Seven Arch Stone Bridge: The Ninth Street Seven Arch Stone Bridge was a historical bridge in Lockport, Illinois.  The bridge was the region's first over the Des Plaines River, facilitating trade between farmers west of the river and merchants in Lockport.  Farmers were previously forced to use a ford, located near 9th Street.  It was approved on March 20, 1868, and cost $4,000.  The arch bridge was constructed using locally quarried limestone in eight to twelve inch blocks.  Each arch of the bridge spanned 197 foot .  The builder is unknown, but may have been Julius Scheibe, a notable local mason who built many of the city's stone structures of the era.  Schiebe was also a highway commissioner during the bridge's construction.  A concrete slab had to be added to the foundation of the bridge in the early 1900s due to increased water levels caused by the Chicago Sanitary and Ship Canal.  The Ninth Street Seven Arch Stone Bridge was closed to traffic in 1971 and was added to the National Register of Historic Places in 2004.

Goose Creek Stone Bridge: The Goose Creek Stone Bridge crosses Goose Creek in Loudoun County, Virginia.  The 200 ft long stone arch bridge spans the creek in four arches.  Built about 1810, it is the largest stone turnpike bridge in northern Virginia, designed to carry the Ashby's Gap Turnpike across the creek.  The turnpike was replaced by U.S. Route 50, which crosses the creek a short distance to the south.  The bridge is no longer used for vehicular traffic.  The bridge was a center of fighting in the American Civil War on June 21, 1863, during the Battle of Upperville.

Supporting paragraphs: Palazzo Pitti Ponte Vecchio
Answer: Ponte Vecchio