zamki in English:

Most castles have a moat surrounding them.

I like castles.

It's worthwhile visiting the old castles.

He built castles in the air all day.

If you are going to build something in the air it is always better to build castles than houses of cards.

Frugality with diligence builds houses like castles.

The door locks automatically.

Before meeting your guests, be sure to carefully check that the toilet door locks.

For code type locks that don't need a key there are 'free dial' systems where you can set any number you like and fixed types where the number is set in advance.