Mentioned as early as the year 1114, the Abbey of St. Andrea al Pozzo - a few kilometers from Castiglion Fiorentino - passed to the Camaldolese order around the middle of the 12th century.
The dedication to St. Andrea - the patron saint of fishermen - is probably due to the fact that in ancient times Valdichiana had many marshy areas, navigable bodies of water rich in fish. A metal manhole remembers the presence of a well in the courtyard located at the back of the church.
In 1810 the church suffered the Napoleonic suppression and passed into private hands who restored it: the interior has a single nave and a single altar - with an inscription commemorating the restoration completed in 1877 - and two side paintings depicting St. Giuseppe and St. Francesco receiving the stigmata.
The façade is made of squared sandstone ashlar masonry arranged in horizontal and parallel courses: both in the façade and on the left flank of the abbey, architectural elements dating from the Romanesque period are also evident.
Above the portal is a small double-arched window decorated with a cross, plant motifs and a relief with human features.