Estates are semi-independent villages (without castle fortifications) that produce their own goods that the owner can send through carts to his castle or his allies.

In the 14th century, under the reign of Charles IV the royal palace was rebuilt in Gothic style and the castle fortifications were strengthened.

There are also surviving parts of the castle fortifications, the majority of which were created in the 16th and 17th centuries and smaller part from the Middle Ages.

At the end of the 15th century the castle fortifications were strengthened and a new gate-tower built.

Also, several connectable castle fortifications were released, including a castle keep and gatehouse which each came with a unique figure, a round tower, and 2 sets of walls.

In the Middle Ages a castle fortification was probably established on the Herzberg to guard the two highways.

He developed, implemented, and expanded the use of long pikes, firearms and castle fortifications in accordance with the expanded mass battles of the period.

By the Middle Ages Polychna, well situated on a freshwater lake, was considered a strong castle fortification.

"Countdown" connects the invention of the movie projector to improvements in castle fortifications caused by the invention and use of the cannon.

The use of the cannon caused changes in castle fortifications to eliminate a blind spot where cannon fire could not reach.