The Guildhall, located in Derry's main city square, is one of the town's iconic landmarks. Built in 1890, it's been beautifully restored since, and welcomes visitors to its elegant insides where members of the Derry City Council still regularly gather.

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.

St. Augustine's might not be Derry's most prominent architectural monument, but it is a lovely old Anglican church enclosed in a cosy garden and radiating tranquility. Sometimes they have concerts here, and the church is worth a visit even if only for a short while.