Fortress of Cacela

The Fort São João da Barra (Fortaleza de São João da Barra in Portuguese) also known as Fort São João Baptista (Fortaleza de São João Baptista in Portuguese) or Fort Conceição (Forte da Conceição in Portuguese), is located to the east of the town of Cabanas de Tavira, on a small hill below the Ria Formosa in the municipality of Tavira, in Algarve, southern Portugal.

Cabanas de Tavira (Portuguese pronunciation: [kɐˈβɐnɐʒ ðɨ tɐˈviɾɐ]; Portuguese for "cottages/huts of Tavira") is a former civil parish in the municipality of Tavira, Portugal. In 2013, the parish merged into the new parish Conceição e Cabanas de Tavira. The parish covers an area of approximately 4.2 km², and encompasses a resident population of approximately 1181 inhabitants. Once a fishing port, it is now a popular summer tourist destination, owing to its beach (Praia de Cabanas) and island (Ilha de Cabanas), which belong to the Ria Formosa Nature Park.

Conceição de Tavira is a former civil parish in the municipality of Tavira, Portugal. In 2013, the parish merged into the new parish Conceição e Cabanas de Tavira.

Conceição e Cabanas de Tavira is a civil parish in the municipality of Tavira, Portugal. It was formed in 2013 by the merger of the former parishes Conceição de Tavira and Cabanas de Tavira. The population in 2011 was 2,519, in an area of 69.44 km².

Fort Santo António of Tavira, also known as Rato Fort (Forte do Rato in Portuguese) or Lebres Island Fort (Forte da Ilha das Lebres in Portuguese), is located east of the Quatro Águas site, at the mouth of the Gilão River, next to the bar of the city of Tavira, in the District of Faro, in Portugal.It is marked as a Property of Public Interest since 1983.

The Nora halt (name previously spelled as Nóra) is a closed interface of the Algarve line, which used to serve the town of Nora, in the municipality of Vila Real de Santo António, in Portugal.

The 1722 Algarve earthquake occurred on 27 December 1722. It was felt throughout the Portuguese region of Algarve and destroyed a large area in southern Portugal generating a local tsunami that flooded the shallow areas of Tavira. It is unclear whether its source was located onshore or offshore and, in any case, what was the tectonic source responsible for the event. Some scientific research work has concluded that the 27 December 1722 Algarve earthquake and tsunami was probably generated offshore, close to 37°01′N, 7°49′W. The 1722 earthquake was 33 years before the great earthquake of 1755 which remains a major event in Portuguese history, mainly due to its effects on Lisbon which was wiped out by structural collapse, fire and then the flooding from a tsunami that raced up the Tagus River. Most of the documentation of the 1722 Algarve seismic event was sent to Lisbon for archiving and became lost after the fire that followed the 1755 earthquake. But the few surviving written records of the 1722 earthquake describe a destructive series of events affecting several Algarvean localities with earth tremors so strong that they made the bells ring out in Tavira, Faro and Loulé. In Tavira a caravel moored on the river Gilão was left high and dry before the tsunami hit with the dumbfounded crew able to walk to shore. The magnitude is estimated to have been 7.8 on the Richter scale. The earthquake of 1722 was probably caused by a diapirism where dense rock from deeper levels under high pressure pierced shallower materials. As a result, buildings in Albufeira, Faro, Lagoa and Loulé were also severely damaged or, in some cases, destroyed. In the 2010s, studies of seismic risk estimated there would be around 12,000 deaths if an earthquake equal to that of 1722 occurred then during peak season, because population density was significantly higher in the coastal areas of Algarve in the early 21st century, when it had already become a popular international travel destination, than in the 18th century, and construction of high-rise buildings built without proper anti-seismic measures were pervasive in the decades preceding such studies.

Cacela Island is a sandy barrier island at the mouth of the Ria Formosa in the Algarve region of mainland Portugal. It was part of a peninsula up to the autumn of 2010, when as a result of storm action, the sea cut the peninsula and turned its westernmost part into an island.Access to the island's beach is made either by wading or boat. The island's beach is known as Praia da Fábrica, or "Factory Site Beach".The former peninsula was 4.4 kilometres (2.7 mi) in length and its width was 0.05 to 0.15 km (0.03 to 0.09 mi). Both the island and the remaining part of the peninsula are located in the civil parish of Vila Nova de Cacela, which in turn is a part of the municipality of Vila Real de Santo António. The island is in the Ria Formosa Natural Park.

Cacela Velha (meaning "Old Cacela" in Portuguese) is a village located in the civil parish of Vila Nova de Cacela, municipality of Vila Real de Santo António, Algarve, Portugal. Cacela Velha is situated on top of a hill with a view to the easternmost lagoon of the Ria Formosa. It is the site of the Fortaleza de Cacela.

The Gilão (Portuguese pronunciation: [ʒiˈlɐ̃w]) is a river in southern Portugal. It is approachable from the Atlantic Ocean, where it enters at the town of Tavira in the Algarve, 35 kilometres (22 mi) east of Faro. The river Gilão changes its name to Rio Séqua at the ancient bridge named Ponte Romana in the centre of Tavira. The river's source is located in the Serra do Caldeirão mountains of the central Algarve, at the confluence of the Asseca, Zimbral and Alportel rivers, the latter rising north of São Brás de Alportel. From here it flows in a southeasterly direction and passes through the Ria Formosa national park south of Tavira, eventually meeting the Atlantic Ocean between the barrier islands of Tavira and Cabanas. The channel is clear, but a bit meandering. There is a large tide swing of about 3 metres (9 ft) feet. There are extensive mariculture clam beds and salt pans near the sea. The name Gilão comes from Gil with doubtful origin but it sounds like the Old Norse word gill meaning stream.

Igreja da Misericórdia de Tavira is a church in Portugal. It is classified as a National Monument.

Tavira (Santa Maria e Santiago) is a civil parish in the municipality of Tavira, Portugal. It was formed in 2013 by the merger of the former parishes Santa Maria and Santiago. The population in 2011 was 15,133, in an area of 147.99 km2.