Should people pay to visit tourist attractions such as museums and art galleries?

I think tourist attractions should be more accessible to children, students and elderly people by giving them the chance of visiting museums and art galleries at a lower price. There could also be discounts for families and free admission days. On the other hand, more visitors would make museums more crowded and this would result in a less enjoyable experience. I think prices should apply to foreign visitors, for the most part, because they are actually the people most interested in exploring the cultural heritage of other countries. An entrance charge is necessary in order to protect institutions such as museums and art galleries. After all, we pay for every other cultural activity, for instance theatre, cinema, and so on. It seems quite reasonable to contribute to the financial needs of museums as well.