Try your hand at the ancient art of mosaic-making in the center of the Floating City. After a lesson from a professional artist, use small pieces of colored material—traditionally glass or stone—to create a pattern or picture of your own!

Journey to Pisa on this half-day excursion. Enjoy a guided tour of the city’s Field of Miracles, where you can snap a picture of the 12th-century Leaning Tower, aslant ever since the third floor was built. This is where Galileo was said to have developed his laws of gravity. Also visit the adjacent cathedral and baptistery, which contain exquisite marble pulpits carved in the Gothic style.

Ascend Mount Etna, Europe’s highest active volcano, on this breathtaking half-day excursion! Listen to commentary from your guide before enjoying free time to walk around the lava fields, take photos, and marvel at the views. Note: Comfortable walking shoes and a jacket are recommended.

Opt to explore the mysterious world buried beneath Rome since the 2nd century. Christian burial grounds and priceless relics abound, and the art that lines the walls is world-class. Afterward, journey down the ancient Appian Way to the Basilica of St. Paul Outside the Walls. Note: Sturdy walking shoes are recommended. This optional is not recommended for those who are claustrophobic.