If you happen to be in Annapolis, Maryland, the lush green scenes of William Paca House & Garden are sure to temp your visit. This 18th-century Georgian mansion was built between the years 1763 and 1765. The house was designed by the former Governor of Maryland, William Paca. Considered as a National Historic Landmark, William Paca House & Garden features a 2-acre walled garden, 1-story office, 2-story summer house, and a huge hall called Carvel Hall.