In Belém, next to the Navy Museum, the 23-metre dome opened in 1965 as the Calouste Gulbenkian Planetarium, showing more than nine thousand stars.

At the top of the Tapada da Ajuda, King Pedro V’s 1861 observatory, with its great dome and Repsold telescope; free visits one Wednesday a month.

In Benfica, the eighteenth-century palace restored by the parish council and opened in 2017 as a cultural centre.

In Algés (Oeiras), next to Lisbon, an 1875 summer chalet that is now a municipal centre for modern and contemporary art.

An eighteenth-century palace on Campo de Santa Clara, home of the Architecture Triennale; open on Saturdays and event days.

In Marvila, the Baroque palace of Lisbon's first Patriarch and former home of the City Museum; open only for one-off events.

On Restauradores Square, an eighteenth-century palace that was a cinema, SPN headquarters and sports museum; under works, no reopening date.

In Benfica, a nineteenth-century palace with Bordalo Pinheiro interiors, home to the study of Lisbon history; visits by appointment.

On the Terreiro do Paço, an hour-long interactive journey through Lisbon's history, from its founding myths to the 1755 earthquake and Pombal's city.

In Paço do Lumiar, a Rococo garden of 1745 covered in azulejos, inside Colégio Manuel Bernardes; visits by appointment.

In Alcântara and Ajuda, the former royal hunting park: about 100 hectares of parkland, wild olive forest and gardens.

Beside the Necessidades Palace, the former royal garden of ten hectares, with ponds, lawns and a greenhouse, open to all.