Recruits had to be 20-25 years of age, a range that was extended to 19-35 in the later 4th century.

It was extended in the 19th century, and is still standing.

This flexibility was extended even further in the 20th century.

The bailey was extended in the 15th century a number times.

The church was extended in the 14th century, with further changes over the coming years.

The building was extended several times in the 20th century.

It was rebuilt soon after and then extended in the 17th century.

It was converted to a house and extended in the 20th century.

The castle was built around 1200 but extended in the 14th century.

The palace has been extended several times in the 19th century.