Brunnen Am Plan, Water well in Altstadt, Koblenz, Germany.

Brunnen Am Plan is a water well in the Altstadt district featuring a dark basalt base topped with yellow sandstone blocks and a decorative palm leaf frieze. Water flows through a swan-neck spout into a semi-circular basin attached to the structure's lower section.

The well was built in 1806 under Mayor Johann Nikolaus Nebel using stones from the demolished Schönbornslust Castle, destroyed by French revolutionary forces. This reuse of materials reflects how the city reconstructed itself following wartime destruction.

The well displays a Latin inscription on its eastern side honoring Elector Clemens Wenzeslaus of Saxony and water director Georg Kirn. This dedication reveals who oversaw the city's water infrastructure at that time.

The well is located on Plan square in the Altstadt district and remains fully functional with flowing water to this day. Visitors can view the structure from multiple angles since it sits on a public plaza with unrestricted access.

The well is fed by the Electoral water pipeline from Metternich, which had just passed into the city's ownership when the well was built. Along with the Obelisk on Deinhardplatz and the Kastorbrunnen, it is one of the last surviving traces of Koblenz's early water supply.