Necessidades Palace (Palácio das Necessidades)
Built on a former convent belonging to the Congregation of the Oratory, the palace was built in the 18th century by order of King João V. Its dedicated to Nossa Senhora das Necessidades (Our Lady of Needs), whose first devotional chapel stood on this site. This distinctively pink palace is located uphill from Alcântara. The lofty location not gives wonderful views over the river but also protected the palace from the tsunami that struck following the earthquake of 1755.
The palace first served as the residence for the Braganza dynasty and later used to house visiting dignitaries, such as the Prince of Wales (the future George IV of Great Britain and Ireland) and his brother the Duke of Sussex. During the peninsular war, the palace served as the headquarters of the Duke of Wellington. Today it serves as the Headquarters of the Ministry of Foreign Affairs. Its interior is out of bounds to visitors. However, the terrace in front of the palace has incredible views, and its gardens are well worth a visit if you're in the area.