▁ ▁Near ▁to ▁Se aton ▁Del aval ▁Hall ▁is ▁the ▁Church ▁of ▁Our ▁Lady , ▁built ▁by ▁the ▁Del aval ▁family ▁in ▁the ▁ 1 2 th ▁century , ▁and ▁alter ed ▁in ▁the ▁ 1 4 th ▁and ▁ 1 9 th ▁centuries . ▁It ▁is ▁a ▁Gra de ▁ 1 ▁listed ▁building . ▁ ▁Hol yw ell ▁D ene ▁is ▁a ▁tree - lined ▁valley ▁through ▁which ▁the ▁Se aton ▁Burn ▁flows ▁to ▁Se aton ▁S lu ice . ▁The ▁valley ▁contains ▁paths ▁running ▁alongside ▁the ▁burn ▁and ▁is ▁maintained ▁by ▁the ▁group ▁' Fri ends ▁of ▁Hol yw ell ▁D ene '. ▁There ▁is ▁a ▁fol ly ▁on ▁the ▁north ▁bank ▁of ▁the ▁den e ▁known ▁as ▁' Star light ▁Castle '. ▁This ▁was ▁built ▁by ▁Sir ▁Francis ▁Del aval ▁in ▁ 1 7 5 0 ▁after ▁accepting ▁a ▁bet ▁that ▁he ▁could ▁build ▁a ▁home ▁for ▁a ▁lady ▁friend ▁in ▁a ▁day . ▁ ▁North ▁of ▁the ▁har bour ▁mouth , ▁past ▁Sand y ▁Island , ▁are ▁B ly th ▁S ands , ▁a ▁wide , ▁sand y ▁beach , ▁back ed ▁by ▁sand ▁d unes , ▁stretch ing ▁all ▁the ▁way ▁to ▁B ly th ▁Har bour . ▁ ▁References ▁ ▁Dob son , ▁H . G . ▁( 2 0 0 5 ) ▁From ▁T yn em outh ▁to ▁the ▁Twe ed , ▁H . G . ▁Dob son , ▁▁ ▁Anderson , ▁D . J . ▁( 1 9 9 7 ) ▁Hart ley ▁to ▁Se