The Rua Augusta Arch was built to commemorate the city's reconstruction after the 1755 earthquake. It has six columns (some 11 m high) and is adorned with statues of various historical figures. Significant height from the arch crown to the cornice imparts an appearance of heaviness to the structure. The associated space is filled with the coat of arms of Portugal. The allegorical group at the top, made by French sculptor Célestin Anatole Calmels, represents Glory rewarding Valor and Genius.
Originally designed as a bell tower, the building was ultimately transformed into an elaborate arch after more than a century.
Because of the top cornice's great height, the figures above it had to be made colossal. The female allegory of Glory stands on a three-step throne and holds two crowns. Valor is personified by an amazon, partially covered with chlamys and wearing a high-crested helmet with dragon patterns, which were the symbols of the House of Braganza. her left hand holds the parazonium, with a trophy of flags behind. The Genius encompasses a statue of Jupiter behind his left arm. At his left side are the attributes of writing and arts.
The four statues over the columns, made by Victor Bastos, represent Nuno Alvares Pereira and Sebastião José de Carvalho e Melo, Marquis of Pombal on the right, and Vasco da Gama and Viriatus on the left. The two recumbent figures represent the rivers Tagus and Douro.References:
Ängsö Castle was first named as "Engsev" in a royal charter by king Canute I of Sweden (r. 1167-1196), in which he stated that he had inherited the property after his father Eric IX of Sweden. Until 1272, it was owned by the Riseberga Abbey, and then taken over by Gregers Birgersson.
From 1475 until 1710, it was owned by the Sparre family. The current castle was built as a fortress by riksråd Bengt Fadersson Sparre in the 1480s. In 1522, Ängsö Castle was taken after a siege by king Gustav Vasa, since its owner, Fadersson's son Knut Bengtsson, sided with Christian II of Denmark. However, in 1538 it was given by the king to Bengtsson's daughter Hillevi Knutsdotter, who was married to Arvid Trolle.
In 1710, the castle was taken over by Carl Piper and Christina Piper. Ängsö Castle was owned by the Piper family from 1710 until 1971, and is now owned by the Westmanna foundation. The castle building itself was made into a museum in 1959 and was made a listed building in 1965. It is currently opened to visitors during the summers.
The castle is a cubical building in four stores made by stone and bricks. The lower parts is preserved from the middle ages. It was redecorated and expanded in the 1630s. The 4th storey as well as the roof is from the expansion of Carl Hårleman from 1740-41. It gained its current appearance in the 1740s.