Known as the Tibet of Japan, the remote Iya Valley is tucked away in the mountainous interior of Shikoku, the least visited of the country’s four main islands. Tourism to the region took a leap forward when it hosted the World Rafting Championship in 2017 — putting its turquoise Class Four rapids firmly on the adventure-travel map. New ziplines and hiking trails are sprouting up in the canyons, while upgrades have been made to accommodations in the area’s traditional thatched-roof farmhouses, or minkas. Chiiori House is the most luxurious; the property also maintains an excellent portfolio of more affordable options. —Adam Harney Graham
Tel Aviv has attracted a lot of attention for its nightlife and creative culinary scene in recent years. These days its center of gravity has shifted south, to the site of the ancient port town of Jaffa (technically part of the city itself). This month, the Setai opens in a former Ottoman prison; a new W Hotel housed in a 19th-century former convent and pilgrims’ hospice is scheduled to open in March. It’s just the latest in a growing list of upscale hotels, restaurants, and boutiques to arrive among the winding streets of this former fishing village. Jaffa’s once-shabby flea market is now populated by a number of high-end antique dealerships, which sit alongside trendy cafés and bars — many offering live music into the night. Don’t miss Maskit, an iconic Israeli fashion house known for its embroidery that has been recently reincarnated after closing in the 1990s. Numerous interesting chefs have also set up shop among Jaffa’s churches, mosques, and archaeological sites. Try Beit Kandinof, a restaurant housed in a 17th-century building, where creative dishes like artichoke-and-pesto bruschetta are served alongside local art exhibits. —Sara Toth Stub
Almost all of the Earth's islands are natural and have been formed by tectonic forces or volcanic eruptions. However, artificial (man-made) islands also exist, such as the island in Osaka Bay off the Japanese island of Honshu, on which Kansai International Airport is located. Artificial islands can be built using natural materials (e.g., earth, rock, or sand) or artificial ones (e.g., concrete slabs or recycled waste). Sometimes natural islands are artificially enlarged, such as Vasilyevsky Island in the Russian city of St. Petersburg, which had its western shore extended westward by some 0.5 km in the construction of the Passenger Port of St. Petersburg.