Ancient Agora, the marketplace of ancient times and the Roman Agora with a clock tower, known as the Tower of the Winds.

Temple of Olympian Zeus, its construction started in the 6th century BC but was finished some centuries later.

Hadrian's Arch, a monument of roman times, built in the 2nd century AD.

The Old Town of Athens "Plaka", with narrow streets, under the hill of Acropolis, with Byzantine churches, museums and monuments. The Lysicrates Monument stands on a small square in Plaka and it was built in the 4th century BC.

Panathenaikon Stadium, built on the remains of an ancient stadium from the 4th century BC, hosted the first contemporary Olympic Games in 1896.

Theatre of Dionysos, constructed in the 6th century BC and Theatre of Herodu Atticu, built under Roman rule in the 2nd century AD, next to the Acropolis.

Ceramikos, the cemetery of ancient Athens, features many beautifully decorated tombstones. The walls were constructed under Themistocles in 478 BC, as well as the

Dipylon Gate and Sacred Gate. There is also a museum in Keramikos.
The majestic Zappion Hall built in 1888, which is surrounded by a park.

The Greek Parliament, formerly the Royal Palace, built in 1840, overlooks Syntagma Square. The Old Parliament on Stadiou Street is one of the best samples of neo-classical architecture. It was used as the seat of Parliament from 1875 to 1932.

The Anglican church of St. Paul built in 1842.

The Kessariani Monastery, built within the forest of Mt. Ymittos, is within easy reach from the city centre. This 11th-century monastery was built on the ruins of a 6th-century church and features precious wall paintings that are excellent samples of Byzantine art.

The Romantic Poseidon Temple at Cape Sounion. The temple, dating back to the 5th century BC, is built on a cliff top at the southern tip of the Attica Peninsula, offering a spectacular view of the Aegean Sea.