The smaller tower, once known as the Kent Building, is valued at about $300 million.

It is famous for its extraordinarily tall tower, known as the Boston Stump.

The gothic tower, now known as Observatory House, was the only part to be completed before money ran out in 1777.

Glenbard West also has a tower known as the sixth floor.

It is likely that the motte was surmounted by a wooden tower known as a keep.

The two western towers, known from later illustrations, were added in the Romanesque period.

In the southwest corner is the highest tower, known as the royal tower.

This basic design has led to the tower being locally known as "the Milk Carton".

One remnant still stands today, however, the ruin of a tower known as the Weiherturm.

The tower, known today as the 'Little Castle', was completed around 1621.