Buildings and structures completed in the 6th century BC

The Tomb of the Bulls (Italian: Tomba dei tori) is an Etruscan tomb in the Necropolis of Monterozzi near Tarquinia, Lazio, Italy. It was discovered in 1892 and has been dated back to either 540–530 BC or 530–520 BC. According to an inscription Arath Spuriana apparently commissioned the construction of the tomb. It is named after the two bulls which appear on one of its frescoes. It is the earliest example of a tomb with complex frescoes in the necropolis, and the stylistic elements are derived from Ionian Greek culture. Along with the frescoes of the Tomb of the Whipping these paintings are relatively rare examples of explicit sexual scenes in Etruscan art, which were far more common in Ancient Greek art.

The Obelisk of Montecitorio (Italian: Obelisco di Montecitorio), also known as Solare, is an ancient Egyptian, red granite obelisk of Psamtik II (595–589 BC) from Heliopolis. Brought to Rome with the Flaminio Obelisk in 10 BC by the Roman Emperor Augustus to be used as the gnomon of the Solarium Augusti, it is now in the Piazza Montecitorio. It is 21.79 metres (71 ft) high, and 33.97 metres (111 ft) including the base and the globe.

The Ishtar Gate was the eighth gate to the inner city of Babylon (in the area of present-day Hillah, Babil Governorate, Iraq). It was constructed c.by order of King Nebuchadnezzar II on the north side of the city. It was part of a grand walled processional way leading into the city.

Cancho Roano (sometimes Cancho Ruano) is an archaeological site located in the municipality of Zalamea de la Serena, in the province of Badajoz, Spain. It is located three miles from Zalamea de la Serena in the direction of Quintana de la Serena Quintana, in a small valley along the stream Cagancha.

The Treasury of the Boeotians was dedicated in the late Archaic period within the sanctuary of Apollo at Delphi. It is identified due to some epigraphic material.

The Mausoleum of Pozo Moro is a Mausoleum of the Iberians from the end of the 6th century BC, which was discovered in 1970 in excavations made in the Province of Albacete.

Castell de la Fosca or Punta del Castell is an ancient Iberian settlement or oppidum sited on a rocky promontory at the north end of the beach called Platja de Castell, about 2 kilometres (1.2 mi) ENE of Palamós (Baix Empordà), on the Costa Brava.

Stoa Basileios (Ancient Greek: στοὰ βασίλειος), meaning Royal Stoa, was a Doric stoa in the northwestern corner of the Athenian Agora, which was built in the 6th century BC, substantially altered in the 5th century BC, and then carefully preserved until the mid-second century AD. It is among the smallest known Greek stoas, but had great symbolic significance as the seat of the Athenian King Archon, repository of Athens' laws, and site of "the stone" on which incoming magistrates swore their oath of office.

The Siphnian Treasury was a building at the Ancient Greek cult centre of Delphi, erected to host the offerings of the polis, or city-state, of Siphnos. It was one of a number of treasuries lining the "Sacred Way", the processional route through the Sanctuary of Apollo, erected to win the favor of the gods and increase the prestige of the donor polis. It was one of the earlier surviving buildings of this type, and its date remains a matter for debate, with the most plausible date being around 525 BC. Until recently it was often confused or conflated with the neighbouring Cnidian Treasury, a similar but less elaborate building, as the remains of the two had become mixed together and earlier theoretical reconstructions used parts of both.