Charco Azul, in San Andres y Sauces, is our top choice, followed closely by Piscinas de la Fajana; a similar location just a short drive north from Charco Azul. Both are well-maintained and equipped with visitor facilities. Pool waters are clear and shallow, with surrounding caves providing shelter from the summer sun.

Mineral deposits found in the Nha Trang area are believed to have natural curative properties, which can be experienced first-hand at the city's several reputable 'mud spa' centres. Services range from the possibility of, quite literally, bathing in mud, to experiencing a full-on treatment in combination with a massage or other beauty procedures. Spa packages are offered at most centres and are incredibly great value. Some of the best-known spa centres include Thap Ba Hot Springs (with private baths available, as well as waterfalls and thermal pools with both warm and cold water); iResort (another large complex, plus water slides), 100 Egg Mud Bath, and – if you're too short on time to make the trip outside of town to one of the larger complexes – Galina Mud Bath right downtown.

Seville's oldest market spreads over two buildings, separated by a small alleyway. Make sure to stop here to try delicious local produce such as meats, seafood, cheese, fruit, vegetables and wine. There are also a few local shops and a restaurant on-site.

The rather small Santa Maria della Spina church, erected around 1230 and later enlarged in 1325, has one of the most outstanding Gothic edifices in Europe. Its riverside location adds to the iconic status, making it one of the most photographed structures in the city. You can find it on the left bank of the River Arno, opposite the National Museum of Pisa. The name of della Spina, 'of the thorn,' comes from the presence of a thorn, recognised as a part of the crown of thorns placed on Christ. The relic was brought to this church in 1333.