Click the top-right X button to display the town screen.
Here you will find various buildings such as the city guard, the tavern or the Hall of Fame. All of these features can be accessed in the menu or by interacting with the respective building.
Also, in the bottom right corner of the city there is the magic portal which opens when a Legendary dungeon or the Hellevator is active and through which you can enter them.
During the day (6:00 -17:59) the city is brightly lit, at night (18:00 - 05:59) it is dark. This tells you when, for example, pets that are linked to a certain time of the day can be found.
The season has an effect on the town as well. For example, in the winter there is snow.