Note the image layout is just a simple suggestion. Yours could be much more extensive. The plan is to divide your area information into logical venues so that the visitor can find what they want in smaller chunks more quickly. If I'm looking for theaters in your town, I don't want to have to wade through a huge scrolling page of random links to all the sights and activities. Take me to a theater page.
This will help you immensely with the search engines. You can now optimize that particular page for a keyword phrase like "YourTown theaters." Note that you might also break out museums into types (art, history, etc.) if there are a number of them. The same for a page for nightlife, and possibly even several for restaurants by type of cuisine.
Are you getting the idea? Get your huge amount of information broken up into bite-size chunks, with the visitor able to locate it and get what they want quickly. This goes to the core of the difference in writing for the internet as compared to print. Your site visitors will usually arrive with a specific requirement for information and an impatience to find it and move on. You'll please them, as well as garner better search engine placement, by having your pages centered around themes that will allow fast information access.
This is the theme we carry forward to the other steps, but we'll not go over this core concept again, so take note of it.
