Tavira was a very important place on the map throughout Portuguese history, in fact, once the most important port beyond Lisbon at the time. During the Age of Discoveries.

Tavira served as the base for Portuguese forays into Morocco and kept the supply of medicine and food to the soldiers.
Tavira combines relaxation away from hordes of tourists on the west Algarve with a picturesque setting, a rare feat for the Algarve. Tavira lies further towards Spain and seems removed from resorts further west.
Tavira is the gem of the east, its gentle charm and low-rise architecture set it aside from other resorts in the region. Sometimes referred to as the Venice of the Algarve, some fine Renaissance architecture, numerous churches, tree-lined squares and a certain romantic air. You will find fine examples of medieval houses complete with Gothic windows and doorways.
When you've had your fill of azulejos and views of terracotta rooftops, wander back down to the riverfront and find a quiet spot for a drink. Fishing is still a mainstay of the local economy and the fishing boats are moored just beyond the old market. This also means that restaurants are supplied with fresh fish.
Another reason to visit Tavira is the Ilha de Tavira, southwest of the town, which has a wonderful beach on its eastern edge. The beach's popularity has encouraged a small amount of development on the island so that there are some café-restaurants, water sports facilities.