5 places catalogued in this kind of landscape.
A basalt "organ" of up to 12 m columns exposed by an old quarry in northern Bohemia, the oldest protected geological site in the country.
One of the largest castle ruins in Slovakia, a 4.5-hectare royal fortress on a volcanic hill that blew up in 1660 and has been overgrown ever since.
An Edo-period post town on the Nakasendō highway, preserved in 1968 by residents who agreed never to sell, rent or demolish, and best seen on the 8 km trail from Magome.
The stone terraces of one of Japan's three great mountain castles, 717 m up in the Gifu hills above an Edo-era merchant street, free to walk at any hour.
The earthworks of the Māori fortress that ended the Northern War in 1846, a hilltop of trenches, rifle pits and palisade lines whose design anticipated trench warfare by seventy years.