One reason for holding the open house days is to get publicity for Hilary Lodge locally.

举办开放日的一个原因是在当地宣传希拉里·洛奇老人院。

youdao

The hall of the old house was open to the sky.

旧房子的门厅是露天的。

《牛津词典》

The house had been thrown open to the public.

这所宅院已向公众开放。

《牛津词典》

It was a tradition to open the White House on that day so the president could wish visitors a happy new year.

VOA: special.2009.10.08

That night,the White House was open to the public.

VOA: special.2009.12.10

"When I was running for president, I promised to open up the White House to the American people,"

VOA: standard.2009.03.26

These people come to the open house to see how it looks and to reminisce.

FORBES: The 5 Kinds of People Who Attend Open Houses

If you have been working with a buyer's agent, let the listing agent know about it at the open house.

WSJ: Open House Etiquette

Some listing agents insist that a buyer's agent will only be paid if that agent accompanied the buyer to the open house.

WSJ: Open House Etiquette