Waterfall pictures painted by Jacob Philipp Hackert (1737-1807). Born in Brandenburg he mostly painted in Italy. Studied at the Prussian Academy of Arts, Berlin. Also painted landscapes with no waterfalls.

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“Die großen Wasserfälle in Tivoli.” 1783. Oil on canvas. Collections of the Hermitage Museum, Saint Petersburg. In the public domain in the United States because the artist has been dead over 100 years. via https://commons.wikimedia.org/wiki/File:Jacob_Philipp_Hackert_002.jpg
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“Villa d’Este.” 1792. In the public domain due to age. via https://fineartamerica.com/featured/villa-deste-jacob-philipp-hackert.html
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“Villa des Maecenas mit den Wasserfällen in Tivoli.” 1783. Oil on canvas. Collections of the Hermitage Museum, Saint Petersburg. In the public domain in the United States because the artist has been dead over 100 years. via https://commons.wikimedia.org/wiki/File:Jacob_Philipp_Hackert_008.jpg
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“Tivoli, a view of the Great Cascade.” 1789. Oil on canvas. Signed, dated and inscribed “Le grand Cascatelle / a Tivoli / Filippo Hackert / depince 1789” on the lower left. Image © 2020 Sotheby’s. Fair use licence. via https://www.sothebys.com/en/auctions/ecatalogue/2016/road-to-rome-property-distinguished-italian-private-collection-part-i-n09462/lot.312.html

1833 drawings of ideas for a tomb for Frederick (Friedrich) the Great of Prussia. Karl Friedrich Schinkel, creator (1781-1841). Collections of the National Galleries of Scotland, Edinburgh.

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Plate 163 (detail), from “Monument of Friedrich the Great,” part of a collection of architectural designs. 1833. Prussian. Image © National Galleries of Scotland. Fair use license. via https://www.nationalgalleries.org/art-and-artists/65497/perspective-view-plan-plate-163-monument-friedrich-great-sammlung-architektonischer-entw%C3%BCrfe?search=Karl%20Friedrich%20Schinkel&search_set_offset=1
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Plate 166 (detail), from “Monument of Friedrich the Great,” part of a collection of architectural designs. 1833. Prussian. Image © National Galleries of Scotland. Fair use license. via https://www.nationalgalleries.org/art-and-artists/65500/perspective-view-plan-plate-166-monument-friedrich-great-sammlung-architektonischer-entw%C3%BCrfe?search=Karl%20Friedrich%20Schinkel&search_set_offset=4
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Plate 165 (detail), from “Monument of Friedrich the Great,” part of a collection of architectural designs. 1833. Prussian. Image © National Galleries of Scotland. Fair use license. via https://www.nationalgalleries.org/art-and-artists/65499/perspective-view-plan-plate-165-monument-friedrich-great-sammlung-architektonischer-entw%C3%BCrfe?search=Karl%20Friedrich%20Schinkel&search_set_offset=3
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Plate 167 (detail), from “Monument of Friedrich the Great,” part of a collection of architectural designs. 1833. Prussian. Image © National Galleries of Scotland. Fair use license. via https://www.nationalgalleries.org/art-and-artists/65501/perspective-view-plan-plate-167-monument-friedrich-great-sammlung-architektonischer-entw%C3%BCrfe?search=Karl%20Friedrich%20Schinkel&search_set_offset=5
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Plate 168 (detail), from “Monument of Friedrich the Great,” part of a collection of architectural designs. 1833. Prussian. Image © National Galleries of Scotland. Fair use license. via https://www.nationalgalleries.org/art-and-artists/65502/perspective-view-plans-details-plate-168-monument-friedrich-great-sammlung-architektonischer?search=Karl%20Friedrich%20Schinkel&se
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Plate 35 (detail), from “Monument of Friedrich the Great,” part of a collection of architectural designs. 1822. Prussian. Image © National Galleries of Scotland. Fair use license. via https://www.nationalgalleries.org/art-and-artists/65366/plate-35-monument-friedrich-great-sammlung-architektonischer-entw%C3%BCrfe?search=Karl%20Friedrich%20Schinkel&search_set_offset=7