Arch ( port. Arca ) - a district (fregezia) in Portugal , part of the district of Viseu . It is an integral part of the municipality of Oliveira de Frades . It is part of a large metropolitan area Big Viseu . According to the old administrative division, it was part of the province of Beira Alta . Included in the economic and statistical subregion of Dan Lafoynes , which is part of the Central region . The population is 387 people for 2001 . It covers an area of 9.11 km².
| Area | |
| Arch | |
|---|---|
| Arca | |
| A country |  Portugal |
| Region | Central Region (Portugal) |
| County | Viseu (Borough) |
| Municipality | Oliveira de frades |
| History and Geography | |
| Square | 9.11 km² |
| Center height | |
| Timezone | |
| Population | |
| Population | 387 people ( 2001 ) |
| Density | 42.5 people / km² |
| Agglomeration | Greater Viseu |