A 20-minute boat ride from Cancún lies the small island of Isla Mujeres with its laid-back Caribbean ambiance, tiny streets lined with stalls, and street cafés in pastel-colored houses. Golf carts and mopeds dominate the streets, and although the island is only 5 miles long and half a mile wide, it still offers plenty of things to do and see. Everything from a beautiful palm-fringed white beach on the north coast to a dramatic rocky shoreline on the eastern side to a sea turtle sanctuary and the remains of a Mayan temple at the southern tip. If you're into adventure, then you should visit the Garrafon Reef Park & Beach Club, where you can go zip-lining, snorkeling, and kayaking. Lastly, a must-visit for nature and wildlife lovers is a tour to Isla Contoy, a nature reserve only inhabited by a few biologists and restricted to 200 visitors per day.

Once the first free settlement in the Americas, founded by those who escaped slavery during the colonial period, the town of San Basilio de Palenque still stands today, and with it the unique culture of its inhabitants. A portion of the population still speaks palenquero, a creole tongue that emerged from a mix of several European and African languages, now used almost exclusively in San Basilio de Palenque. Music and dance occupy a place of paramount importance in residents' lives, with the Drums and Cultural Expressions Festival held annually in October. The palenque cuisine deserves a separate mention — a culinary tradition upheld by inhabitants of a small Colombian village has garnered international acclaim, with a cookbook written in the town receiving the highest prize at the Gourmand World Cookbook Awards in 2014. If your schedule happens to be too tight for a dedicated day trip (which earns our highest recommendation), try some of the tropical fruit sold by palenqueras in downtown Cartagena. The village was named Masterpiece of the Oral and Intangible Heritage of Humanity by UNESCO in 2005.

One of Reykjavík's most iconic landmarks and a must-visit while in Iceland is Harpa, the city's concert hall and conference centre, as well as home to the Icelandic Opera and the Icelandic Symphony Orchestra. Located by the old harbour, near the centre of Reykjavík, this striking bit of contemporary architecture boasts a glass facade, which covers the entire building featuring honeycomb panels, which change colours during the day as they reflect the sky and the ocean. At night, a light show makes the building look even more magical.