National Archaeological Museum, Athens

Listen for a moment. Outside, the traffic of Patission Street hums and honks. Then you climb the broad steps, pass between the pale columns, and the noise drops away. The air inside is cool. The floors are smooth stone, and your footsteps carry a little further than you expect. This is the National Archaeological Museum, and it holds the largest collection of ancient Greek art in the country. Thousands of years of human hands are waiting in these rooms.

First, look at the building itself. It is neoclassical, which means it borrows the language of ancient temples — columns, pediments, calm symmetry — and uses it for a modern purpose. Construction began in the second half of the nineteenth century. Greece had only recently become an independent state. The young nation wanted a home for its past, a place to gather the treasures that were coming out of the ground across the country. This museum was the answer.

The front garden is worth a pause before you go in. Palm trees and pines shade the lawns. In summer, the cicadas are loud here. The garden also separates the museum from the city in a quiet way. You leave modern Athens at the railings, and by the time you reach the doors, you are already thinking about something older.

Inside, most visitors walk straight ahead into the prehistoric rooms. And straight ahead, under glass, is gold. This is the treasure from the royal graves at Mycenae, an ancient Bronze Age citadel in the Peloponnese. The most famous piece is a hammered gold face, known as the Mask of Agamemnon. The German businessman and excavator Heinrich Schliemann found it in the 1870s. Popular stories say he declared he had gazed upon the face of Agamemnon, the legendary king from Homer's poems... but that line is probably more legend than record.

Here is the first surprise. The mask is almost certainly not Agamemnon at all. Archaeologists date the burials to centuries before the Trojan War could have happened, if it happened at all. So the name is a romantic mistake that simply stuck. Look closely at the face anyway. The eyes are closed. The beard and moustache are pressed into the thin metal with fine lines. Someone made this to honour a real person, whose name is now lost.

Nearby, the mood changes completely. The Cycladic figures come from the islands of the Aegean, from a culture much older than classical Athens. They are carved from white marble, smooth and simple. Many show women with folded arms. There is also a small seated musician holding a harp. These figures look strangely modern. Twentieth-century artists admired this kind of simplicity. But in their own time, many were probably painted, with eyes and details that have since faded away.

Now move into the sculpture halls. Here you meet the kouroi. A kouros is a statue of a standing young man, made in the Archaic period, the age before classical Greece. They stand straight, one foot slightly forward, arms by their sides. Notice the small, closed smile on many of their faces. Scholars call it the Archaic smile. Walk past them in order, and you can watch the bodies slowly loosen. The stone becomes softer, more lifelike, more human.

Then comes one of the great bronzes of the ancient world. A tall, naked god stands with his arms spread wide, as if he is about to throw something. He was found in the sea off Cape Artemision, in northern Euboea, in the twentieth century. Nobody is completely sure who he is. Some say Zeus, ready to throw a thunderbolt. Others say Poseidon, with a trident. The weapon itself is gone, so the argument continues today. Stand at his side and look along his arm.

Here is the second surprise. Bronze statues were once common in ancient Greece. But bronze could be melted down and reused, so most of them disappeared. Many of the bronzes that survive today come from the sea. Shipwrecks protected them for centuries. Nearby, from the same waters, a small boy rides a galloping horse. The horse stretches forward with real speed. You can almost feel the wind on the rider's face.

The sea also gave this museum its strangest object. In the early twentieth century, sponge divers found an ancient wreck near the island of Antikythera. Among the statues and pottery were some corroded lumps of bronze. Later, researchers saw gears inside them. This is the Antikythera Mechanism. Scholars believe it was a device for calculating the movements of the sun, the moon, and possibly the planets. It is often called the oldest known analogue computer. Look closely at the tiny teeth on the gear wheels.

The collection did not always sit quietly here. During the Second World War, as occupation approached, staff packed many of the antiquities and hid them. Some objects were buried in protective pits, others stored in safe places. After the war, the long work of bringing everything back and reinstalling the galleries began. When you look at an unbroken vase here, remember that someone once wrapped it carefully and waited for safer days.

Upstairs and in quieter wings, there is much more. You can find painted pottery, with black figures on red clay and red figures on black. There are also everyday objects, jewellery, and grave markers carved with families saying goodbye. These gravestones are among the most moving things in the building. A seated woman holds a hand. A servant offers a box. The faces are calm. The grief is held back, and that makes it stronger.

You cannot see everything in one visit, and you do not need to. Choose a few rooms and stay longer than feels normal. Sit on a bench. Let your eyes adjust to the marble. You will start to notice tool marks, a chipped nose, traces of old colour. The museum café in the inner courtyard is a good place to rest between galleries. Many visitors forget it is there.

As you walk back towards the entrance, notice the light again. It falls through tall windows onto stone that was carved by people who stood under the same Greek sun. Outside, Athens is waiting with its traffic and its noise. But for a few more steps, you are still among them... the gold face, the bronze god, the small gears. Take one last look before you go.