Aquae Calidae, Bulgaria Aquae Calidae, Bulgaria Aquae Calidae (Latin for warm waters), also known as Therma and Thermopolis in the Middle Ages, was an ancient town in Thrace located in the territory of today's Bulgarian port city of Burgas. It was built around thermal baths using the hot springs and became one of the most important spa centres of ancient times. The site and baths of Aquae Calidae have been visited in the course of history by several important rulers from Philip II of Macedon to the Eastern Roman emperors Justinian I and Constantine IV, the Bulgarian ruler Terwel and the Ottoman Sultan
Aquae Albae in Byzacena Aquae Albae in Byzacena Aquae Albae in Byzacena (also typographed Aquæ Albæ in Byzacena) was an Ancient city and bishopric in Roman Africa and remains a Latin Catholic titular see. Its present location is Ain-Beida, in modern Tunisia (which has namesakes, notably in Algeria and Morocco). Aquae Albae was important enough in the Roman province of Byzacena to become one of the many suffragans of its capital Hadrumetum's Metropolitan Archbishop, but was to fade. The diocese was nominally restored in 1933 as a Latin Catholic titular bishopric. It has had the following incumbents, all of the lowest (episcopal) rank :