Since these temples are still unfinished, no worship has been offered there. Pancha Rathas when translated mean "five chariots", and they are named individually after Draupadi and the Pandava brothers. It is different matter that there may not be relation between them and the epic Mahabharata.
The view in this photo is from the northwest. In the foreground is a carved lion. Behind the lion, from left to right in the photo, are the Draupadi, Arjuna, and Bhima Rathas. In front of Bhima Ratha is Elephant and Nakul-Sahadava Ratha. Dharmaraja Ratha is hidden in this photo behind the other structures.
Draupadi Shrine is the smallest and simplest and it is formed as a bangla hut. The Arjuna shrine is like a small palace or pavillion, with sculpted pilasters, and an octagonal dome. Bhima Shrine is the largest with its barrel vaulting and long columned porch. Seated lions are carved in front of the columns at the base. Nakul-Sahadeva Shrine is south-facing and is in apsidal shape.
Dharmaraja Shrine is a larger version of the Arjuna Shrine with pyramidal roof. The building is topped by an octagonal-shaped dome, the shikhara. Since there is a increase in the elevation below this shrine, it gives a clear look at the decorative elements of its roof, when compared with Arjuna's similar roof.
The craftsmanship when viewed in person will be appreciated more.