Going into London Paddington Station, look out for the Turrilites (and other fossils) in the limestone floor
In Norwich, see the marble brain outside the Forum;
In Exeter, look out for the massive feldspars in the
granite paving slabs...
In Ilfracombe, Devon, look at the Capstone;
In Penrith, Cumbria, go and see the castle: Stratified red sandstones
At Bristol Temple Meads station, look out for the breccia building stone;
At the RSPB's Headquarters in Sandy, you will find this outcrop of Woburn Sands in the Old Quarry
Outside the Scottish Parliament on Edinburgh's Royal Mile, stop and look at this!