Opened in 1901, Tampere Market Hall is the largest indoor market in the Nordic countries, therefore, the perfect place to soak up some Finnish culture and mingle with the locals doing their grocery shopping. It's also the perfect place to try the local black sausage (mustamakkara), among other delicacies.

Do you dare to swim with these ocean giants? From around May to September, sharks appear close enough to the coast of Cancún, and several tour operators let you observe them and even swim and snorkel with them (all safety precautions, naturally, in place).

The Beitou area of Taipei is renowned for its high concentration of thermal spa centres. There are establishments to fit any budget, from the low-priced open-air Public Hot Spring (modest swimwear required) to private hotels and resorts uphill, all offering hot spring baths at various price points. One option most resorts offer is renting a private room with a large bath that can be filled with hot spring water. The Spring City Resort in Beitou is a great mid-range option. A session here includes access to about a dozen thermal pools of varying water temperature (from seemingly boiling-hot to rather chilly), plus robe, towel, and slipper rental. They even offer a free shuttle bus to the metro station. For a luxurious spa treatment, look into the offerings of Hotel Regent Taipei, for example. Wellspring Spa offers a wide range of relaxing treatments including massages, body wraps, skin polishing and facials. Take the elevator to the top floor and unwind at this urban sanctuary.