Around 800 AD, a chapel is said to have been built on the site of current Saaleck Castle. The origins of the castle remain unclear. It was first mentioned around 1030 by a historian from the nearby Homburg, which was being extensively expanded at the time.
Significant expansions were made in the 13th century. Abbot Heinrich von Erthal (1249–1261) completed the fortifications, adding ditches, walls, and battlements. The neck ditch was deepened, and the shield wall was reinforced. Over the following centuries, the castle was continuously worked on. Even Ulrich von Hutten once paid 50 guilders to renew a wooden bridge over the southern neck ditch.
Originally, Fulda's southernmost stronghold played an important role in the region. The castle was strategically located and was significantly strengthened during the time of Abbot Marquard I.
After the Thirty Years' War, Salentin von Sintzig rebuilt the castle as his retirement residence. According to his reports, the castle was in a very ruined state at the time, with large stones being taken away by locals for their own construction purposes. From 1644 to 1667, he meticulously rebuilt the entire complex. Before the Peasants' War, the castle had lost its military importance and had fallen into ruin. It had not suffered significant damage from wars or fires until the outbreak of the war, when it was suddenly occupied and devastated by rebels.
About 100 meters below the castle lies the upper end of the chapel's way of the cross from the Altstadt Monastery.
Today, the castle, or Schloss Saaleck, is protected as a landscape-defining historical monument.
The Roman Theatre of Mérida is a construction promoted by the consul Vipsanius Agrippa in the Roman city of Emerita Augusta, capital of Lusitania (current Mérida). It was constructed in the years 16 to 15 BCE. One of the most famous and visited landmarks in Spain, the Roman Theatre of Mérida is regarded as a Spanish cultural icon and was chosen as one of the 12 Treasures of Spain.
The theatre has undergone several renovations, notably at the end of the 1st century or early 2nd century CE (possibly during the reign of Emperor Trajan), when the current facade of the scaenae frons was erected, and another in the time of Constantine I (between 330 and 340), which introduced new decorative-architectural elements and a walkway around the monument. Following the theatre"s abandonment in Late Antiquity, it was slowly covered with earth, with only the upper tiers of seats (summa cavea) remaining visible.