The interior of the castle grounds is open at advertised times.

It is open for visiting by the general public at advertised times.

The house is open to the public at advertised times.

They are open to the public at advertised times.

The house and gardens are open to the general public at advertised times.

The hall is open to the general public at advertised times.

The house above is open free of cost to visitors at advertised times.

Stockley Farm is also open to the public at advertised times.

The museum is open at advertised times throughout the year.

Even if they only last half the advertised time, that is great deal.