The paintings face the four compass points, and here at Penmon's thrilling headland, I come across his eastern view of the seascape.
Garratt hasn't tried to be too clever or abstract – there's no wondering what you are supposed to be looking at.
The impressive dovecote and other buildings at Penmon are the remains of a medieval priory, while the holy well is a link with the earlier Age of Saints.
Return to Beaumaris, then complete the drive over Menai Bridge, where Thomas Telford's graceful, functional suspension bridge has carried the original London-Holyhead road high above the Menai Strait since 1826. Traffic forecast: generally light, except between Beaumaris and Menai Bridge in summer.
Landmarks: Snowdonia; Marquess of Anglesey's column; Plas Newydd; Holyhead Mountain; Wylfa Power Station; Parys Mountain; Menai Bridge.
"Four on Anglesey" sounds suspiciously like an Enid Blyton tale of smuggling, clever-clogs kids and of course ginger beer.
To explore the old workings on Parys Mountain, drive inland down the B5111 before rejoining the main road near Moelfre.
A short clifftop walk from Moelfre passes where the gold-laden Royal Charter was wrecked during a hurricane in 1859.
Just beyond Brynsiencyn, a narrow lane wriggles to the shore where the Anglesey Sea Zoo and Foel Farm Park overlook Caernarfon.Turn right beyond Malltraeth and follow the B4422 to Llangefni.Snugged into a valley, this is a pleasant little market town where the Oriel Ynys Mon museum and art gallery merit a visit.On balance, as I stand on a headland near Penmon Priory, I prefer the landscape painter Anthony Garratt's take.His Four on Anglesey comprises four large, open-air canvas portraits of the island that will spend the summer competing with the elements of north Wales.Medieval buildings contrast with the terrace built by Joseph Hansom, the architect who also invented the eponymous cab.