Monte Castello di Vibio is a comune (municipality) in the Province of Perugia in the Italian region Umbria, located about 30 kilometres (19 mi) south of Perugia. Monte Castello di Vibio borders the following municipalities: Fratta Todina, San Venanzo, Todi.

It is a medieval, 15th century walled village of central Italy and sits in the Umbrian Hillside above the Tiber Valley. It is one of I Borghi più belli d'Italia ("The most beautiful villages of Italy").

The surrounding landscape is quilted with vineyards, olive groves and sunflower fields, and stitched in with rows of cypresses and umbrella pines.

"Monte Castello" or Mountain Castle refers to the medieval fort structure of that villages that was built in the Umbrian hillside, while "Vibio" was added to the name in 1863 by Royal Decree of the King of Italy, Vittorio Emanuele II to distinguish it from other municipalities after the Unification of Italy. "Vibio" likely comes from an ancient, noble family of Perugia, Colonia Vibia Augusta Perusia and Roman emperor Gaius Vibius Trebonianus Gallus.

Host to a mix of medieval and renaissance buildings, landmarks and monuments that have been preserved over the centuries. Visitors can enjoy scenic views throughout the village and access to hiking trails within the surrounding valley. Notable sites include:

Built in 1809, Teatro della Concordia is the smallest theatre all'italiana in the world and was designed in the shape of a bell.

Also known as "The Crucifix" because of the 15th century wooden statue that resides in it. Constructed on a small, pre-existing church in 1839 by the Holy See.The vault was frescoed by Luigi Agretti, who decorated the Teatro Della Concordia in 1892.

Ancient stone church with fresco decorated interior, erected in 1505 under the name of Madonna delle Grazie.

Small neoclassical style church erected in 1808 by Mons. Francesco Gazzoli, as the site of the old sacristy Oratorio del Pio Suffragio. It contains three naves and a semicircular apse. The interior of the church is painted by artists Nicola Benvenuti and Mario Barveris.

A medieval towers and the two main gates of the wall surrounding the village. Part of the Historical Museum, includes artifacts and heirlooms such as weapons, friezes, noble coats of arms, cadastral maps and other archeological finds from the Roman period. The restored interior and staircase allow access to panoramic views of the Mid-Tiber valley.

Scenic vantage point that gives panoramic views of southern Umbria, as well as the Lazio and Abruzzo mountains.

Situated above the Tiver Valley, Monte Castello di Vibio has access to the Sistema Territoriale di Interesse Naturalistico Ambientale (S.T.I.N.A.), which includes three protected natural areas in the mountain community of Monte Peglia and Selva di Meana, as well as the Middle Tiber Valley River Park.

Monte Castello di Vibio is home to the International Center for the Arts. Founded in 1994, the institution hosts artists, researchers, musicians and academics during the summer and fall months each year. Programming includes retreats, workshops, sommelier courses, festivals, performances and other cultural programming to visitors. They have welcomed some of the most respected artists and thinkers in the world, including William Bailey, Andrew Forge, Ruth Miller, Sandro Chia, John Spike and Wayne Thiebaud.

One of the most appreciated products of Monte Castello di Vibio is olive oil. In fact, this land is inserted in "Extra virgin olive oil DOP Umbria" and the head office is in Trevi. The most part of Montecastello's hills, from century traditions, are cultivated with care and passion with olive tree. This tree produces a quality olive oil and is a pleasure feature of landscape.

• Official website
• Thayer's Gazetteer
• International School of Painting, Drawing, and Sculpture