Roman Catholic Diocese of Saint-Paul-Trois-Châteaux

Saint-Paul-Trois-Châteaux (French pronunciation: [sɛ̃ pɔl tʁwɑ ʃɑto]; Vivaro-Alpine: Sant Pau de Tricastin), sometimes known as St-Paul-en-Tricastin, is a commune, an administrative region, in the Drôme department in southeastern France.

Saint-Paul-Trois-Châteaux Cathedral (French: Cathédrale Notre-Dame-et-Saint-Paul de Saint-Paul-Trois-Châteaux or Cathédrale Notre-Dame de Saint-Paul-Trois-Châteaux) is a former Roman Catholic church located in the town of Saint-Paul-Trois-Châteaux, France. It was a national monument. It was formerly the seat of the Bishop of Saint-Paul-Trois-Châteaux. The diocese (sometimes, like the town, also known as Saint-Paul-en-Tricastin) was created in either the 4th or the 6th century and was abolished under the Concordat of 1801, when its territory was divided between the Diocese of Avignon and the Diocese of Valence, known since 1911 as the Diocese of Valence (–Die–Saint-Paul-Trois-Châteaux).

Saint-Restitut (French pronunciation: [sɛ̃ ʁɛstity]; Occitan: Sant Restit) is a commune in the Drôme department in southeastern France.

The Barry Troglodyte Village is an archaeological site near Bollène, northwestern Vaucluse, France. It is located on a forested hill that overlooks the Rhône valley. A group of caves and stone buildings comprise an ancient village that is historically interesting because it was inhabited continuously from the neolithic until the early 20th century. Most remaining buildings date from the 17th until the 19th century, including a chapel from 1706 that was partly built in a cave.

The Tricastin Nuclear Power Plant (French: Centrale Nucléaire du Tricastin) is a nuclear power plant consisting of 4 pressurized water reactors (PWRs) of CP1 type with 915 MW electrical power output each. The power plant is located in the south of France (Drôme and Vaucluse Department) at the Canal de Donzère-Mondragon near the Donzère-Mondragon Dam and the commune Pierrelatte. The power plant is part of the widespread Tricastin Nuclear Site (see below), which was named after the historic Tricastin region. Three out of the four reactors on the site had been used until 2012 to power the Eurodif Uranium enrichment plant, which had been located on the site.

Clansayes (French pronunciation: [klɑ̃saj]; Occitan: Clansaias) is a commune in the Drôme department in southeastern France.

La Garde-Adhémar (French pronunciation: [la ɡaʁd ademaʁ]; Occitan: La Garda d'Aimar) is a commune in the Drôme department in the Auvergne-Rhône-Alpes region in Southeastern France. A member of the association Les Plus Beaux Villages de France, it is located 18.3 km (11.3 mi) south of Montélimar. In 2021, it had a population of 1,136.

The Georges-Besse plant, known as the Eurodif plant from 1978 to 1988 (for European Gaseous Diffusion Uranium Enrichment Consortium), was a nuclear facility specializing in uranium enrichment by gaseous diffusion. The plant, now in the nuclear dismantling phase, is located on the Tricastin nuclear site at Pierrelatte in the Drôme region. On the initiative of French President Georges Pompidou in late 1969, an agreement was signed between France, Belgium, Italy, and Spain in 1972 to give France complete autonomy over the nuclear fuel cycle. The plant was inaugurated in 1979 and operated for 33 years by Eurodif SA, a subsidiary of Areva NC. Along with Urenco, which operates based on an agreement between Germany, the UK, and the Netherlands, it was the only uranium enrichment plant operating based on a multinational agreement. The Tricastin nuclear site comprises several nuclear facilities, the largest of which are the Tricastin nuclear power plant, the former Georges-Besse plant, and the new Georges-Besse II centrifuge enrichment plant. The enriched uranium produced was used as fuel by French nuclear power plants and many foreign power plants. The enriched uranium produced by this plant supplied around 90 pressurized water reactors, the most widely used nuclear technology in the world, including the 58 French reactors. Eurodif SA's customers included EDF and over 30 electricity companies worldwide, and its main competitors were the United States and Russia.

Eurodif, which means European Gaseous Diffusion Uranium Enrichment Consortium, is a subsidiary of the French company Orano, which operates a uranium enrichment plant, called the Georges-Besse plant, established at the Tricastin Nuclear Power Center in Pierrelatte in Drôme. The nuclear site of Pierrelatte includes many nuclear installations, of which the largest are the Eurodif fuel factory and the Tricastin nuclear power station. Enriched uranium is the preferred fuel for light water reactors, a common nuclear power technology.

The Donzère-Mondragon Dam (or André-Blondel dam), located in the French commune of Bollène-Écluse) is a hydroelectric dam and lock built in 1952 at the southern end of the Donzère-Mondragon canal, in the Vaucluse department in France. It was registered in the list of historic monuments in France in 1992.