Italy

Colosseum or Coliseum, originally known as the Flavian Amphitheatre (lat. Amphitheatrum Flavium), is an amphitheatre in Rome, capable of seating 50,000 spectators, which was once used for gladiatorial combat. It was built by Emperor Vespasian and his son, Titus, between AD 72 and AD 90. It was built at the site of Nero's enormous palace, the Domus Aurea. The Colosseum's name is derived from a colossus (a 130-foot or 40-metre statue) of Nero which once stood nearby.
Roman Forum was the central area around which ancient Rome developed, in which commerce, business, trading and the administration of justice took place. Here the communal hearth was located. Sequences of remains of paving show that sediment eroded from the surrounding hills was already raising the level of the forum in early Republican times. Originally it had been marshy ground, which was drained by the Tarquins with the Cloaca Maxima. Its final travertine paving, still to be seen, dates from the reign of Augustus.
Spanish Steps is in Rome ramp a steep slope between the Piazza di Spagna at the base and the church Trinità dei Monti above. The monumental stairway, of 138 steps, was built with French diplomat Stefano Gueffier’s funds in 1723 1725, linking the Bourbon Spanish embassy to the Holy See, today still located in the piazza below, with the Trinità dei Monti church above. The Spanish Steps were designed by Francesco De Sanctis after generations of heated discussion over how the steep slope to the church on a shoulder of the Pincio should be urbanized.
Circus Maximus is an ancient arena and mass entertainment venue located in Rome. The Circus was the site of public games and festivals influenced by the Greeks in the 2nd century BC. Julius Caesar expanded the Circus around 50 BC, after which the track measured approximately 600 metres in length, 225 metres in breadth and could accommodate an estimated 150,000 seated spectators.
Pantheon is a building in Rome which was originally built as a temple to all the gods of the Roman state religion, but has been a Christian church since the 7th century AD. It is the only building from the Greco-Roman world which is completely intact and which has been in continuous use throughout its history.
Piazza Navona is a square in Rome. The Piazza follows the plan of an ancient circus and was built in monumental style by the family of Pope Innocent X, the Pamphilj. Piazza Navona is the pride of Baroque Rome, with sculptural and architectural gems by the masters, Bernini (the Fountain of the Four Rivers in the center), and Borromini with Rainaldi (Church of Sant'Agnese in Agone), Pietro da Cortona painted the gallery in the Pamphilj palace.
Tabularium was the official records office of ancient Rome, and also housed the offices of many city officials. Situated within the Forum Romanum, it was on the front slope of the Capitoline Hill, below the Temple of Jupiter Optimus Maximus, to the southeast of the Arx and Tarpeian Rock. Before it was the Temples of Vespasian & Concord, as well as the Rostra and the rest of the forum. It was constructed originally around 78 BC, possibly by order of Sulla or maybe even Pompey the Great.