Thanks MaffyD, those are great ideas. I plan to build the Time Portal in the middle. I have the Hogwarts Castle that will also be in my display, not sure yet how that will work in my past, present and future idea. I will take photos along the journey. Thanks everyone for such kind support.
My grandson is almost three. For Christmas, I gave him the Batcave Duplo Lego. I am happy to say it was his favourite Christmas Present. Here is my idea for my Lego creation. I am going to build a lego display with the present, past and future idea with a time portal that transports the minifig to a dinosaur area, midevil area, a city area for the current time and a furture time which I will use the space Lego. I know this sounds quite ambitious but I have time and tons of Lego. I am hoping this forum will be able to help with ideas.