Borobudur is well-known all over the world.
Its construction is influenced by the Gupta architecture of India. The temple is constructed on a hill and consists of eight steps like stone terrace. The first five terraces are square and surrounded by walls adorned with Buddhist sculpture in bas-relief. The upper three are circular. Each of them is with a circle of bell shape-stupa. The entire upper structure is crowned by a large stupa at the center of the top circle. The way to the summit extends through some 4.8 km of passage and stairways.
The design of Borobudur symbolizes the conception of universe in Buddhist cosmology. It is believed that the universe is divided into three spiritual spheres, Kamadhatu, Rupadhatu, and Arupadhatu. The first sphere, Kamadhatu, represents respectively the sphere of desires where we are bound to our desires; the second sphere, Rupadhatu, represents forms where we abandon our desires but are still bound to name and form; and the last sphere, Arupadhatu, represents formlessness where there is no longer either name or form.
There only best to visit is just Borobudur Cycling.