The remains of the Castle can be visited
Royal Palace (Ruin) (Frankfurt)

The ruin of the Imperial Palace in Frankfurt am Main bears witness to the city's former importance as a Carolingian and Ottonian seat of power. Today, the excavated foundations are a fascinating relic that offers insight into Frankfurt's early history.
History+
The origins of the palace date back to the early 9th century, when it was probably built under Louis the Pious, son of Charlemagne. It replaced Merovingian buildings from the 7th century, which in turn followed Alamannic settlements. Over two centuries, the complex was repeatedly rebuilt and expanded, giving rise to the predecessors of today's cathedral. From the 11th, or at the latest 12th century, the palace lost its function as a royal residence due to fires, reconstruction, and demolition. Its remains disappeared for almost a millennium under subsequent civic development. Only after the destruction of Frankfurt's old town in World War II could archaeological excavations uncover the palace's actual location. Since the early 1970s, the findings have been presented in the Archaeological Garden.
Location+
The ruin of the Imperial Palace is located in Frankfurt am Main, in the federal state of Hesse, Germany, at an elevation of approximately 113 m above sea level.
On site+
The ruin is now accessible to visitors and can be explored. It is part of the Archaeological Garden, which displays the excavated foundations of the historic buildings.
Nearby+
- Saalhof Castle (Castle), approx. 0.2 km away
- Thurn und Taxis Palace (Residence), approx. 0.6 km away
- Rothschild Palace (Residence), approx. 0.8 km away
- Holzhausen Castle (Castle), approx. 1.8 km away
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Source: Wikipedia · Licence: CC BY-SA 4.0
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 50.1106, 8.6844