Eauze is an old city, where the vestiges of the past abound. You can distinguish the old city, located at the interior of the old ramparts today transformed into boulevards and whose some vestiges remain, and the modern city, which grows outside. You can note a certain number of remarkable constructions:
* The Saint-Luperc cathedral. It is devoted to Saint Lupercus, evangelist who converts Anatole and Dassin. Built in 1521, by Jean bishop Enough of Condom. This is a Gothic vessel high of 22 m, with single nave, and low vaults between the buttresses, with an octagonal bell-tower. Roman bricks were employed again in the walls. Its high bays have stained glasses of the XVIIth century. The building shelters an organ of platform (Daublaine-Callinet, 1842) with dresser neogothic. The archbishop of Auch François Augustin Delamare makes the church again a cathedral in 1865.
* A whole whole of old half-timbered houses, which the house of Jeanne d' Albret of the end of XVth century with wood pillars and carved beams.
* Vestiges of the old ramparts with remainders of the still visible ditches, as well as sections of wall of the first enclosure, very close to Gelise.
* The castle of the imperial water, first castle of the modern water of France, built on the orders of Napoleon III.
* The very beautiful archaeological museum of Eauze, where is exposed an important Roman treasure found on October 18, 1985 close to the old station, in the district known as of “Cieutat” (the City). It includes 28.003 coins, of which some out of gold and money, of the jewels and the invaluable objects. The objects and documents presented evoke the life of the inhabitants of the antique Elusa (Eauze), which was the capital of the Roman province of Novempopulanie.
* The arenas Nimeño II, of 4000 places, where remains the Gascon tradition taurine.