Most visitors arrive overland from England, and the border is just a road sign.
By train. Great Western Railway runs fast trains from London Paddington to Newport, Cardiff and Swansea; Cardiff is about two hours from London. For North Wales, trains from London Euston and from Manchester and Crewe run along the north coast via Chester to Llandudno Junction, Bangor and Holyhead. Mid Wales is reached from Birmingham and Shrewsbury on the Cambrian line to Aberystwyth and the coast.
By air. Cardiff Airport, west of the city, has a modest list of European flights. Many visitors fly into Bristol for South Wales, or into Manchester or Liverpool for the north, and continue by train or car.
By ferry from Ireland. Ferries cross the Irish Sea from Dublin to Holyhead on Anglesey, and from Rosslare to Fishguard and Pembroke Dock in Pembrokeshire.
By road. The M4 crosses the Severn from Bristol into South Wales. The A55 runs along the north coast from Chester to Holyhead. The roads into mid Wales are slower and more scenic.