In the United States, a structure that is 300, or even 200, years old is considered extremely aged. Yet in Europe, 18th- and 19th-century construction seems young, considering the age of some revered sites.
The circa 15th-century medieval fortress known as Hohenwerfen Castle overlooks the town of Werfen, Austria, 25 miles south of Saltzburg. The castle was designed as a traditional stronghold with outlying structures for housing, a bridge, a church, and even a crypt.