Perched atop the stark white cliffs of Pamukkale lies Hierapolis — an ancient city that's as rich in history as it is in thermal springs. Once a Phrygian cult centre and later a flourishing Greek city, Hierapolis boasts a well-preserved amphitheatre, an array of atmospheric ruins, and the famed Sacred Pool, a thermally heated delight where you can immerse yourself amidst submerged Roman columns, scattered by an ancient earthquake. Just a stone's throw away, the terraces of Pamukkale steal the show. These gleaming white formations, made of travertine — a sedimentary rock deposited by the mineral-rich hot waters — give the town its name, meaning 'Cotton Castle'. With temperatures ranging from 35°C to a steamy 100°C, these hot springs have been creating an expanding landscape of terraces for centuries, as calcium carbonate from the waters crystallises into the soft gel of travertine. Awarded UNESCO World Heritage status, Hierapolis and Pamukkale offer a unique fusion of cultural history and natural wonder that should not be missed.

Aquae Calidae, located about 17 kilometres from central Burgas, is a historical site that blends ancient and modern elements. Known for its Roman baths dating back to the 1st century AD, the site also features medieval structures and the restored bathhouse of Suleiman the Magnificent. Modern walkways and 3D mapping technology guide visitors through its rich history, from Thracian times to the Ottoman era. The complex includes a café, souvenir shop, and an amphitheatre, with plans for further development, including a museum and active spa centre.

Historic Ships in Baltimore, a National Historic Landmark, features five historic maritime artifacts: the USS Constellation, the last Civil War-era warship afloat; the USS Torsk, a Cold War submarine; the USCGC Taney, which survived the attack on Pearl Harbor; the Lightship 116 Chesapeake; and the Seven Foot Knoll Lighthouse, one of Baltimore’s oldest lighthouses. Visitors can explore these ships through guided tours, interactive exhibits, and even overnight adventures.