Ah ... good to see so many options. Perhaps wrong to look for Dopplegangers as every place is unique ... and. perhaps also wrong to look at lists in categories.
However, from
Travel Earth I offer you the "most beautiful places in the
UK▸ " - Bamburgh Castle, Barfundle Bay, Buachaille Etive Mor, Chatsworth House, Cheddar Gorge, Dun Briste, Dunnottar Castle, Durdle Door, Fairy Pools, Fingal's Cave, Giant's Causeway, Glen Nevis, Glenfinnan Viaduct, Gold Hill, Hadrian's Wall, High Force, Kynance Cove, Lake Windermere, Langmull Beach, Lavender Fields, Llanberis Pass, Llanthony Priory, Llyn Dinas, Loch Ness, Mealt Falls, Micheldever Forest, Minack Theatre, Norfolk Lavender, Pen-y-Fan, Portmeirion, Rye, Sgwd Yr Eira, Smoo Cave, St Michael's Mount, Stonehenge, The Dark Hedges, The Needles, The Old Man Of Storr, The Royal Pavillion, The White Cliffs Of Dover, Tintern Abbey, Tresco Abbey Gardens, Whiteless Pike and Wistman's Wood.
And from
Visit Britain's most visited lists I give you Ashmolean Museum of Art and Archaeology; Blenheim Palace; Brighton Pier; British Library; British Museum; Canterbury Cathedral; Chester Zoo; Eden Project; Hampton Court Palace; Horniman Museum and Gardens; Houses of Parliament; Imperial War Museum London; Longleat Safari & Adventure Park; MAC Birmingham; Merseyside Maritime Museum; Museum of Liverpool; National Museum Royal Navy; National Portrait Gallery, London; Natural History Museum (South Kensington); Old Royal Naval College; Oxford University Museum of Natural History; RHS Garden Wisley; Roman Baths; Royal Academy of Arts; Royal Botanic Gardens, Kew; Science Museum; Serpentine Gallery; Somerset House; St Paul's Cathedral; Stonehenge; Tate Britain; Tate Modern; The Abbey Gardens and Abbey Ruins; The National Gallery; Tower Bridge Exhibition; Tower of London; V&A (South Kensington); Westminster Abbey; Windermere Lake Cruises, Bowness; ZSL London Zoo. For 2021, may I speculate, that these places will have the impetus to attract visitors from within the UK barring a miracle recovery in world tourism.