Ehresnbreitstein Fortress 
Description
Overlooking the city from the opposite bank of the Rhine, the fortress was undefeated until Napoleon turned up. It was rebuilt by the Prussians into its current form and heavily refurbished prior to the German Horticultural show taking over the site in 2011.
Charge
Free to look around the site.
Getting There
Latitude: 50.364655; Longitude: 7.613869
What3Words: blesses.hesitate.curtail
