Guarda is a city and a municipality in Guarda District, Beira Interior Norte sub-region in Centro Region in Portugal. The city of Guarda was founded by King Sancho I in 1199.
Guarda is the highest city in continental Portugal (altitude 1,056 m), located to the northeast of Serra da Estrela (the largest mountain in mainland Portugal). The main attraction in Guarda is its cathedral, known as the Sé da Guarda. Guarda is a diocese of the same name.