Most significant are the odeon, used as a concert hall and city council with the capacity of 1.500 people, Temple of Hadrian dating back to the second century where one of the best sculpture craftsmanship can be seen, Curettes Street hosting many monuments and countless colums on the sides of its marble paved ground, a fountain dedicated to Emperor Trajan where a part of a remaining statue shows us that Romans knew the round shape of the world in the first century AD, and latrines (toilets) where it can be seen how they cared about public sanity. 