Day 1: Leave London and travel west to the rolling hills of the Cotswolds through England’s prettiest historic villages. Get the best photos and hear the most fascinating local tales. Travel through the Welsh Marches marked out by the ancient Offa’s Dyke. Head into the heart of the Cambrian Mountains and beautiful Elan Valley. Finally, head to the beautiful seaside town and cultural center of Aberystwyth, where you spend the next two nights. Day 2: Travel to the mountainous region of Snowdonia National Park. Visit the mountain village of Beddgelert to see the famous grave of Gelert, the legendary dog, or explore the nearby copper mine. Next, head to the town of Machynlleth to see the ancient clock tower and the quaint houses, and go antique hunting. Move on to Porthmadog and over the Cob causeway before reaching the impenetrable medieval Harlech Castle. After a fulfilling day, return to Aberystwyth in the late afternoon. Day 3: Travel around the coast of Cardigan Bay through Aberaeron to New Quay. Explore the picturesque harbor and get the chance to spot dolphins and whales. Head into the foreboding Black Mountains to explore a bedrock cave under a castle, before you visit Laugharne, where Dylan Thomas wrote the famous play Under Milk Wood. Move on to Tenby, a charming seaside town and your base for two nights. Day 4: See some of Britain’s most gorgeous coastlines at the Pembrokeshire Coast National Park. Travel to the tiny cathedral city of St Davids for lunch and exploration, and stop in the county town of Pembroke to enter the thick medieval walls of the castle. From here, return to Tenby for a relaxed evening. Day 5: Leaving Tenby in the morning, begin your return journey to London. Head past the industrial cities of South Wales to the outskirts of Cardiff, and visit the outdoor National History Museum. Stop at the well-preserved Roman Fortress at Caerleon. Take the Severn Bridge back into England, and take a break at Castle Combe, a Cotswold village perfect for a relaxed stroll amongst 16th-century ironstone cottages.