Among his collaborators were James Ussher, John Lightfoot and Edward Pococke, Edmund Castell, Abraham Wheelocke and Patrick Young.
Castell Dinas Bran (the castle of the town of Bran; the mountain stream below is also called Bran), the ruins of a fortress on a high conical hill about 1 m.
Powis Castle, being of red sandstone, is usually called in Welsh Castell Coch (red castle).
The Castell Malgwyn is an extremely homely Georgian country house with river frontage and spacious gardens.
The Club de Golf Son Parc golf course is situated just a few miles away from Es Castell.
The old British tower and castle were called Castell caled fryn yn Rhos, the "castle of the hard hill in Rhos."
To the south near the harbour is the massive Castell' Ursino, erected in 1232 by Frederick II.