Circus Maximus-

The Circus Maximus is an ancient Roman chariot racing stadium and mass entertainment venue located in Rome, Italy.
Wooden bleacher like seats
Created in 329 bc
Was eventually turned into marble

Coliseum- The Colosseum or Coliseum, also known as the Flavian Amphitheater is an elliptical amphitheater in the centre of the city of Rome, Italy.
Had vast tunnels underneath for gladiators animals and other things

Aqueducts

Arches

held by gravity

used gravity to transport water

high in the air

Roman forum
Lots of arches
giant square that formerly was surrounded by gov buildings
made of brick