Stourhead - near Mere, Wiltshire, England. The 1,072-hectare estate has gardens designed by Henry Hoare II laid out between 1741 and 1780 in a classical 18th-century design. As a collector of art – one of Henry's pieces was Nicolas Poussin's Aeneas at Delos, which is thought to have inspired the pictorial design of the gardens and passages telling of Aeneas's journey are quoted in the temples surrounding the lake. Many of the temples are inspired by scenes of the Grand Tour of Europe.
Château de Azay-le-Rideau in the Loire Valley, France, is a former feudal castle. During the 12th century, the local seigneur Ridel d’Azay, a knight in the service of Philip II Augustus, built the fortress to protect the Tours to Chinon road.
Conwy Castle, Wales, is one of the most prominent fortresses built by Edward I in the 13th century. It is one of the key castles of the king's "iron ring" of fortresses constructed in Wales. The stronghold was quite an expensive undertaking - it is estimated that Edward spent £15,000 (£162 million in 2009) on the construction, which makes it the most costly castle in the Welsh history. Today Conwy is declared a World Heritage Site.
I loved visiting Portmeirion in Wales because it's made from a collection of odd bits and architectural fragments, rescued from places all over Europe. It was the brainchild of Sir Clough Williams-Ellis who built it during the period from 1925 to 1975. His daughter Susan is the designer of Portmeirion china.