Tree Avenue or tree alley (allée)

In landscaping, an avenue or allée is traditionally a straight path or road with a line of trees or large shrubs running along each side, which is used, as its French source venir ("to come") indicates, to emphasize the "coming to," or arrival at a landscape or architectural feature. In most cases, the trees planted in an avenue will be all of the same species or cultivar, so as to give uniform appearance along the full length of the avenue. The French term allée is used for avenues planted in parks and landscape gardens, as well as boulevards such as the Grande Allée in Quebec City, Canada, Bologna Alley in Zagreb and Karl-Marx-Allee in Berlin.

The avenue is one of the oldest ideas in the history of gardens. An avenue of sphinxes still leads to the tomb of the pharaoh Hatshepsut (died 1458 BCE); see the entry Sphinx. Avenues similarly defined by guardian stone lions lead to the Ming tombs in China. British archaeologists have adopted highly specific criteria for "avenues" within the context of British archaeology.

In order to enhance the approach to mansions or manor houses, avenues were planted along the entrance drive. Sometimes the avenues are in double rows on each side of a road. Trees preferred for alleys were selected for their height and speed of growth, such as poplar, beech, lime, and horse chestnut. In the American antebellum era South, the southern live oak was typically used, because the trees created a beautiful shade canopy.

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