Azores, Portugal

Sete Cidades holds two crater lakes side by side in a single volcanic caldera, one appearing blue and the other green depending on light and mineral content — a genuinely unusual, widely photographed sight best seen from the caldera rim above. In Furnas, a local stew called cozido is still cooked underground using natural geothermal heat, a distinctive tradition worth timing a meal around.

Several nonstop routes from Boston run under five hours, which surprises most first-time visitors — flying to fully European territory in roughly the same time as a US transcontinental flight.

June through September brings the best weather for hiking around the crater lakes and other outdoor sights; the islands stay mild year-round but turn noticeably rainier in shoulder and winter months.

The Azores, a Portuguese archipelago in the mid-Atlantic, are defined by volcanic crater lakes, hydrangea-lined roads and a consistently green, temperate landscape unusual for a Portuguese destination — São Miguel, the largest island, holds the famous twin lakes of Sete Cidades inside a single volcanic crater. Whale watching is a major draw, with the islands' deep surrounding waters supporting one of the most consistent and diverse whale populations in the Atlantic.

Four to five nights covers one or two islands given inter-island ferry or flight time. It suits nature and outdoor-focused travelers specifically, and whale watching is best booked for the first days of a stay in case weather requires rescheduling.

Getting there: About 4.5-5.5h nonstop from Boston and several other East Coast gateways. We check routing and fare-class options across that itinerary and weigh them against June to September, rather than booking on price alone.

The Azores formed entirely through volcanic activity along the boundary of three tectonic plates — the North American, Eurasian and African — and that ongoing geological activity is still visible today in the islands' fumaroles, hot springs and the Furnas caldera on São Miguel, where locals traditionally bury pots of cozido, a meat-and-vegetable stew, directly in geothermally heated volcanic soil for several hours, a genuinely local cooking method built around the islands' own geology rather than a novelty demonstration. The islands were uninhabited until Portuguese explorers settled them in the 15th century, making the Azores, unlike much of Portugal's colonial history elsewhere, a place with no prior Indigenous population displaced by European arrival — its culture developed as a genuinely isolated Atlantic outpost of Portuguese settlement, distinct enough in accent and tradition that mainland Portuguese consider Azorean Portuguese notably different. The islands sit directly on the Mid-Atlantic Ridge and were a critical refueling stop for early transatlantic aviation and a NATO air base during the Cold War, a strategic military history mostly invisible to visitors focused on the hiking and whale-watching now driving tourism. Azorean cuisine, beyond cozido das Furnas, centers on fresh tuna and limpets (lapas), alongside a genuinely distinct dairy and cheese tradition from the islands' lush volcanic pastureland, including São Jorge cheese, aged and internationally recognized in its own right.