9 Sights in Cascais e Estoril, Portugal (with Map and Images)

Boca do Inferno is a chasm located in the seaside cliffs close to the Portuguese city of Cascais, in the District of Lisbon. The seawater has access to the deep bottom of the chasm and vigorously strikes its rocky walls, making it a popular tourist attraction. The cave was the first to be depicted in moving pictures, in the 1896 British film A Sea Cave Near Lisbon, which shows waves breaking at the mouth of the cave.

Wikipedia: Boca do Inferno (EN)

The Santa Marta Lighthouse is situated to the south of the centre of Cascais, Lisbon District, Portugal, on the estuary of the River Tagus, providing a light for the Cascais Bay and for the town's new marina. It is a quadrangular masonry tower covered with white tiles, with blue horizontal stripes and a red lantern. The lighthouse was built on the grounds of the Santa Marta Fort, which now houses a lighthouse museum.

Wikipedia: Santa Marta Lighthouse (EN)

The Cascais Cultural Centre is situated close to the Citadel of Cascais in the municipality of Cascais in the Lisbon district of Portugal. It consists of several exhibition spaces, a recital hall and a restaurant. Opened in May 2000, parts of the building date back to the end of the 16th century, when it was constructed as a Carmelite monastery. The Centre is managed by the Dom Luís I Foundation.

Wikipedia: Cascais Cultural Centre (EN)

The Fort of Nossa Senhora da Guia is located in Cascais, Lisbon District in Portugal. It was built during the Portuguese Restoration War (1640-1668), becoming operational in 1646. The site, which preserves some parts of the fort, is now occupied by a maritime laboratory under control of the Faculty of Sciences of the University of Lisbon.

Wikipedia: Fort of Nossa Senhora da Guia (Cascais) (EN), Heritage Website Sipa, Heritage Website

The Cascais tide gauge was the first tide gauge installed in Portugal and dates back to 1882. It is situated in Cascais Municipality, Lisbon District. It was one of the first systems of sea-level data collection installed on the coast of Europe and is still in use.

Wikipedia: Cascais tide gauge (EN), Heritage Website Sipa, Heritage Website

The Casa de Santa Maria was once a luxurious private residence in Cascais, Lisbon District, Portugal. It was acquired by the Cascais Municipality in October 2004 and is now a museum. It blends several different architectural styles and influences.

Wikipedia: Casa de Santa Maria, Cascais (EN)

The Fortress of Nossa Senhora da Luz de Cascais is located in a dominant position in the Cove of the same name, on the right bank of the Tagus River, in the village, parish and municipality of Cascais, Lisbon district, in Portugal.

Wikipedia: Forte de Nossa Senhora da Luz de Cascais (PT), Heritage Website Sipa, Heritage Website

The Guia lighthouse is an active Portuguese lighthouse located at Cabo da Guia, about 2 km west of the centre of Cascais. It is an octagonal tower in white masonry with a red lantern that has a range of 18 nautical miles.

Wikipedia: Guia Lighthouse (Portugal) (EN)

The Roman ruins of Casais Velhos are the remains of a Roman town, in the municipality of Cascais, Lisbon District, Portugal that included baths, two cemeteries, remains of a wall and ceramic artifacts.

Wikipedia: Roman ruins of Casais Velhos (EN), Heritage Website Arqueologia, Heritage Website Sipa, Heritage Website