ence ▁M . ▁Mitchell , ▁Jr . ▁Cour th ouse . ▁ ▁The ▁National ▁Gallery ▁in ▁London ▁began ▁the ▁concept ▁of ▁bringing ▁art ▁out ▁of ▁doors ▁in ▁ 2 0 0 7 ▁and ▁the ▁Detroit ▁Institute ▁of ▁Art ▁introduced ▁the ▁concept ▁in ▁the ▁U . S . ▁The ▁Off ▁the ▁Wall ▁reprodu ctions ▁of ▁the ▁Wal ters ' ▁paint ings ▁are ▁done ▁on ▁weather - res istant ▁vin yl ▁and ▁include ▁a ▁description ▁of ▁the ▁painting ▁and ▁a ▁Q R ▁code ▁for ▁smart ▁ph ones . ▁ ▁Further ▁reading ▁Adams , ▁Ar ron . ▁( 2 0 1 6 ). ▁T ie p olo : ▁His ▁Pal ate . ▁ ▁B air d , ▁I le ana ▁and ▁Christ ina ▁I ones cu . ▁E igh teenth - Cent ury ▁Th ing ▁Theory ▁in ▁a ▁Global ▁Context : ▁From ▁Cons umer ism ▁to ▁C ele br ity ▁Culture . ▁Taylor ▁and ▁Francis ▁( 2 0 1 3 ). ▁ ▁Cal ares u , ▁Mel issa . ▁" Images ▁of ▁An cient ▁Rome ▁in ▁Late ▁E igh teenth - Cent ury ▁Ne ap ol itan ▁Histor i ography ." ▁Journal ▁of ▁the ▁History ▁of ▁Ide as , ▁Vol . ▁ 5 8 , ▁No . ▁ 4 ▁( Oct . ▁ 1 9 9 7 ), ▁pp .   6 4 2 – 6 6 1 . ▁▁ ▁Gr ig gs , ▁Tam ara . ▁" An cient ▁Art ▁and ▁the ▁Anti qu arian : ▁The ▁F org ery ▁of ▁Giuseppe ▁Guerra , ▁