Enjoy the sights of Athens, Piraeus, and Riviera from the top deck of a double-decker hop-on hop-off sightseeing bus. Admire the architecture of the cities and learn about their history from the onboard commentary that’s available in 12 languages. Choose either the 90-minute Athens route that begins at Syntagma Square, the 60-minute Piraeus route that starts out at the cruise terminal, or the 120-minute Riviera and beaches route with a starting point at the Acropolis. There is an interchange bus stop at the Acropolis that connects all of the lines. These tourist-friendly city tours offer the opportunity to admire and stop and visit spectacular sites. From May to October, enjoy complimentary audio-guided walking tours of the surrounding areas of the Acropolis, Plaka, and the National Gardens. In Athens, a city filled with historical and cultural monuments, you can hop off to explore the Acropolis and Parthenon archaeological sites. Take in the new Acropolis Museum and the Archaeological Museum. Explore picturesque Plaka and Monastiraki, where you’ll discover neoclassical buildings, archaeological findings, and souvenir shops. Historic Piraeus port is one of the most important commercial seaports in the Mediterranean. Nearby, you’ll find a number of private harbors, such as the Mikrolimano and the Zea Marina (Pasalimani). Admire the architectural beauty of the Municipal Theater and visit the Planetarium, one of the best equipped in the world.