Archaeological ruins that comprise a complex array of structures reveal a multitude of occupations from the Neolithic period to the Middle Ages. Well-preserved remains of an early Christian temple, tombs containing bones from different eras, a large anthropomorphic stele, and an imposing menhir can be observed. The presence of a manor house and bathing area testifies to the importance of this Roman manor house.

The Casa Grande museum displays collections of archaeology (from the Paleolithic to the Modern Age, with special emphasis on the Roman period), regional ethnography (agricultural tools and implements directly related to farming and objects related to breadmaking, shepherding, wine production, olive oil and almonds) and local history, through the collection of materials and documentation related to the history of the former municipal seat. It also has a section of the Casa do Moutinho.

The Ervamoira Site Museum, inaugurated in 1997, is located on the Ervamoira Estate, in the heart of the Côa Valley Archaeological Park. A visit to the Ervamoira Museum will introduce you to the various areas linked to the history of the site and the Douro wine industry: Natural Heritage, Roman and Medieval Archaeological Heritage, Ethnographic Heritage, the history of Casa Ramos Pinto, the Estates and the Viticulture of the Upper Douro. Visits to the Farm and the Ervamoira Museum are organized by appointment and conducted by a guide.

The Côa Museum is a cultural space designed to promote the historical and cultural heritage of the Côa Valley Archaeological Park. The building interacts strongly with the landscape, developing across four floors that include an auditorium, educational services, administrative area, shop, and exhibition rooms.

Built in the 18th century, this house is considered one of the finest examples of Baroque civil architecture. Constructed of granite, it features Rococo decoration concentrated in the windows and main door. This construction demonstrates elements of Douro Baroque architecture, influenced by Nicolau Nasoni. In the early 19th century, Napoleonic troops were stationed here, later setting fire to the building in 1810 before withdrawing. From 1895 onwards, it underwent partial reconstruction, initiated by the 3rd Viscount of Banho.

This castle possessed one of the best defensive border walls. Currently, only a few gates, sections of the wall, and towers crowning the hilltop remain. Several anthropomorphic tombs are also preserved near the east gate. Its layout had an irregular configuration, almost without battlements, and with three gates (the West Gate, the Arch Gate, and St. Peter's Gate), a keep, and four more towers.

Possibly built upon a Lusitanian hill fort, this castle sits on a hill. It retains some sections of the wall, gates, a small tower, and a cistern with a regular plan. It is possible to observe the perimeter of the wall that surrounded the inner courtyards and the Keep. From a distance, it resembles a king's crown planted on a mound of earth.

The church consists of three naves, a chancel, a sacristy, and an archive. The façade features a full-arch portico with Manueline decoration (flanked by two national coats of arms), armillary spheres, a fleur-de-lis, and a cross of Christ. It is topped by a bell tower with three windows and four Renaissance busts. Inside the church, the Baroque altars, the coffered ceiling of the chancel, the statuary, and the inclination of the columns are noteworthy.

An 18th-century building with a longitudinal plan, composed of two volumes of two and three stories. In the mid-20th century, a new building was added to serve as a hospital and home for charitable institutions, where they remained until 2000. Currently, it houses the Pousada Castelo de Óbidos.

A fountain with a back wall dating from the 18th century, composed of a single curved panel topped by royal arms on the pediment. It was commissioned by Queen Maria I, on the site where the Arabs had a public well.