The physical geography of the United Kingdom consists of hilly
and grassy landscapes. Expect to see a lot of grassy hills, and
Victorian era castles in the country sides. The roads have to snake
around hills and valleys while trains mostly go through tunnels to
cut through the hills.
Victorian-era "castles" (actually homes) are not
physical-geography entities, and there are not many of them dotted
around the countryside. Most of the large English country, or
"stately", homes are older than that, and very few even resemble
The physical geography is arguably the most varied in the world
for the same land area - far more than just "hilly and grassy". Nor
do the trains "mostly" go through tunnels - tunnels are expensive
to cut so were built only where absolutely necessary, e.g. to run
under the cols or upper ridges between the heads of the valleys
utilised by the lines as their main routes through hill ranges.