Arno in the context of "Pistoia"

Etruria (/ɪˈtrʊəriə/ ih-TROOR-ee-ə) was a region of Central Italy delimited by the rivers Arno and Tiber, an area that covered what is now most of Tuscany, northern Lazio, and north-western Umbria. It was inhabited by the Etruscans, an ancient civilization that flourished in the area from around the 8th century BC until they were assimilated into the Roman Republic in the 4th century BC.

The March of Tuscany was a march of the Kingdom of Italy and the Holy Roman Empire during the Middle Ages. Located in northwestern central Italy, it bordered the Papal States to the south, the Ligurian Sea to the west and Lombardy to the north. It comprised a collection of counties, largely in the valley of the River Arno, originally centered on Lucca.
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A high water mark is a point that represents the maximum rise of a body of water over land. Such a mark is often the result of a flood, but high water marks may reflect an all-time high, an annual high (highest level to which water rose that year) or the high point for some other division of time. Knowledge of the high water mark for an area is useful in managing the development of that area, particularly in making preparations for flood surges. High water marks from floods have been measured for planning purposes since at least as far back as the civilizations of ancient Egypt. It is a common practice to create a physical marker indicating one or more of the highest water marks for an area, usually with a line at the level to which the water rose, and a notation of the date on which this high water mark was set. This may be a free-standing flood level sign or other marker, or it may be affixed to a building or other structure that was standing at the time of the flood that set the mark.

A high water mark is not necessarily an actual physical mark, but it is possible for water rising to a high point to leave a lasting physical impression such as floodwater staining. A landscape marking left by the high water mark of ordinary tidal action may be called a strandline and is typically composed of debris left by high tide. The area at the top of a beach where debris is deposited is an example of this phenomenon. Where there are tides, this line is formed by the highest position of the tide, and moves up and down the beach on a fortnightly cycle. The debris is chiefly composed of rotting seaweed, but can also include a large amount of litter, either from ships at sea or from sewage outflows.

Pisa (/ˈpiːzə/ PEE-zə; Italian: [ˈpiːza] or [ˈpiːsa]) is a city and comune (municipality) in Tuscany, Central Italy, straddling the Arno just before it empties into the Ligurian Sea. It is the capital city of the Province of Pisa. Although Pisa is known worldwide for the Leaning Tower of Pisa, the city contains more than twenty other historic churches, and several medieval and Renaissance palaces, mostly facing each other on the avenues along the Arno ("Lungarno"). Much of the city's architecture was financed from its history as one of the Italian maritime republics.

The city is also home to the University of Pisa, which has a history going back to the 12th century, the Scuola Normale Superiore di Pisa, founded by Napoleon in 1810, and its offshoot, the Sant'Anna School of Advanced Studies.

The Palazzo Pitti (Italian: [paˈlattso ˈpitti]), 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.

The palace was bought by the Medici family in 1549 and became the chief residence of the ruling family of the Grand Duchy of Tuscany. It grew as a great treasure house, for generations amassing paintings, plates, jewelry and luxurious possessions. The Medici also added the extensive Boboli Gardens to the palace estate.

The Loggia dei Lanzi, also called the Loggia della Signoria, is a building on the south corner of the Piazza della Signoria in Florence, Italy, adjoining the Uffizi Gallery (leading to the Arno), and diagonally to the east the Palazzo della Signoria, the political center of the city. The loggia consists of three very high and wide arches open to the Piazza and on its east side to the Uffizi. The arches rest on cluster columns with Corinthian capitals. The wide arches appealed so much to the Florentines that Michelangelo proposed that they should be continued all around the Piazza della Signoria (see also Piazza Santissima Annunziata).