Promote art and make it fun to consume it.
A website and app that invites people to join a global game of who is the biggest art consumer, who sees the most exhibitions, etc. Have leaderboards in many major and minor categories, like geographic (country, state, city), topical (paintings, sculptures), movements (impressionists, fauvists), etc.
For the museum, it’s a way to sell more books by having different price levels. The visitor gets a chance to personalize their book and get one at the price level they want to spend (not necessarily cheaper.)
Every time the visitor sees an exhibit they would like in their book, they select it (using an app, a special device they get when they enter, etc.) When they finish with the exhibition, they choose the type of book they want (how many pages, size, the amount of text, level of production quality, etc.) and after a short time they can pick it up at the museum shop printed especially for them just the way they wanted.
You have some favorite artists and would like to know where in the world are there exhibitions of their work – currently and in the future.
A website where you can look up your favorite artist and see where is their work currently (and in the near future is going to be) exhibited. You get all the details like address, how to get there, opening hours, prices, etc.
Make the visit to an exhibition more fun for the kids (and their parents.)
Write secret facts and stories specifically for kids for specific exhibits. These are only visible to kids if they wear special glasses, or flash a special light around the exhibit and find these secret writings.
You are going to London in a couple of days and would like to know what is superb to experience.
A website and app that lets you share your experience of temporary attractions (like seasonal happenings, museum exhibitions, etc.) in the city you just visited. You can also look up what is worthwhile doing now in the city you’re going to visit. The emphasis is on personal experiences.