Must-SeeRhine Valley
Rhineland-Palatinate
About 80 miles away
Castles and vineyards on the classic river cruise.
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Tunnels and galleries carved deep into the cliff below the old castle, once holding soldiers, cannons and, in wartime, 35,000 people.
The Spanish began cutting the casemates in the 17th century, and later rulers extended them to 23 kilometers. Most were destroyed after the fortress was dismantled in 1867, but 17 kilometers survive, and the Bock's galleries look out over the Alzette valley.
In both world wars the tunnels sheltered the townspeople from bombing.
Must-SeeCastles and vineyards on the classic river cruise.
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