[D] ABERGAVENNY, (the ancient Gobanium of the Romans,) and its environs, have strong claims to the traveller's attention. Its castle and delightful terrace overlook the rich vale of Usk; its church, abounding in costly sculptured tombs, its beautifully variegated mountains, all conspire to render this place particularly attractive. This town was once fortified, and many portions of the work remain, particularly Tudor's Gate. The western entrance is furnished with two portcullises, and remarkable for the beautifully composed landscape seen through it. The style of building which forms the remains of this fortress marks its origin to have been subsequent to the Norman epoch. Excursions are frequently made to Blaenavon Iron Works, about six miles distant, which employ upwards of four thousand men. The mountainous territory containing these mineral treasures of iron, was demised by the crown to the Earl of Abergavenny, and is held under a lease by Hill and Co. A principal excursion from Abergavenny is that which leads northwards to Llanthony Abbey, a majestic ruin, seated in a deep recess of the black mountains, at the very extremity of Monmouthshire. Abergavenny is a place of much resort, being the thoroughfare from the west of Wales to Bath, Bristol, and Gloucestershire. Its principal manufacture is flannel, and its annual fairs for cattle are well attended. _Mail_ arrives 2 P.M., departs 11 A.M.--INNS, Angel, and Greyhound.--_Bankers_, Hill and Co., draw upon Esdaile and Co.,--Jones and Co., draw upon Williams and Co.--_Fairs_, May 14, lean cattle and sheep; 1st Monday after Trinity, linen and woollen cloths; September 25, horses, hogs, and flannel.--_Market_ Tuesday. [Sidenote: Gobanium of the Romans.] [Sidenote: Tudor's Gate.] [Sidenote: Blaenavon Iron Works. 4000 men employed.] [Sidenote: Llanthony Abbey, a majestic ruin in the black mountains.]