Burghley House 16th c.near Stamford, Lincolnshire, England. Its park was laid out by Capability Brown. Burghley was built for Sir William Cecil, later 1st Baron Burghley, who was Lord High Treasurer to Queen Elizabeth I, between 1558 and 1587 and modeled on the privy lodgings of Richmond Palace.
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.