Botany Bay Activity Centre is a Gwent Scouts facility situated in the Wye Valley near Chepstow, on Trelleck Road (NP16 6SN).

The site features a large camping field, woodland suitable for Scouting activities, and several buildings including a lodge and training cabins.

The River Wye runs alongside the site, and the Wye Valley Walk — a 36-mile route between Chepstow and Ross-on-Wye — passes directly through.

Offa's Dyke long-distance footpath is accessible just across the river, and the two trails can be combined for circular hikes. The Forest of Dean, with cycling, climbing, caving, and canoeing, is close by, as are the Black Mountains and Brecon Beacons.

The centre is open to Scout and Guide groups as well as other organisations, offering both indoor and outdoor accommodation for residential stays and leader training.