Object seen from a distance

Can anyone help me? I need to create an object that can be seen from any distance the player likes and that the player can get there, I don't know how to do that. What can I do? Should I use entity, block, some kind of object shaders, etc? I don't want it to be like the sun and the moon that the player can't reach, but rather something like a structure, block, entity, etc., something that the player can reach.