The National Archaeological Museum, in Exarchia, is home to Ancient Greece’s most spectacular pieces. One room contains Schliemann’s finds from Mycenae, another has the famous frescoes from Santorini on display. There is also a fine collection of idols from the Cyclades and ceramics from all parts of the Mediterranean. The star of the museum is the Antikythera Mechanism, an ancient hand-powered orrery, described as the oldest example of an analogue computer used to predict astronomical positions and eclipses decades in advance. This scientific marvel is dated somewhere between 205 and 60 BCE.

The Byzantine and Christian Museum in Athens houses more than 25,000 artefacts from the Early Christian, Byzantine and Medieval times. Byzantine culture was almost entirely concerned with religious expression, so in the museum's collection you'll find pictures, scriptures, relief carvings, frescoes, pottery, fabrics and manuscripts.

Surrounded by coral gardens and with the water so clear in places you can see 40 metres down, the islands of Tonga offer premium diving and snorkelling experiences. Swim inside the Swallows Cave and dive into Mariners Cave from the island of Vava'u. From Ha'apai, view captivating marine life and colourful corals. Discover the "The Green Wall" of Ha'ano Islands — a long drop-off that plunges towards the great Tongan trench.