'House of Prayer' in the Bible

and on the sabbath-day we went out of the city to the side of a river, where, as usual, was the house of prayer; and we sat down and spoke to the women who had come together.

And it came to pass, that as we were going to the house of prayer, there met us a certain maid-servant that had a spirit of Python, who brought much gain to her masters, by giving responses.