Boston vs San Sebastián

Boston

Boston has a humid continental climate with four sharply defined seasons. Winters are cold and snowy, summers are warm and humid, and spring and fall can be glorious. Proximity to the Atlantic moderates extremes but also brings nor'easter storms in winter and occasional sea fog in summer.

San Sebastián

San Sebastián has an oceanic climate — milder and wetter than the Mediterranean coast. Summers are warm but rarely scorching, winters are cool but mild. Rain is frequent year-round, especially in autumn and spring. The Basque coast is greener than southern Spain for a reason.

Boston

Boston's MBTA — simply "the T" — covers the city with subway, trolley, commuter rail, bus, and ferry. The subway is the oldest in the Americas, compact, and perfect for most visitor itineraries. A CharlieCard (reloadable) or CharlieTicket (paper) is used across the system. Driving is painful — narrow one-way colonial street grids, no numbered system, and notoriously aggressive drivers.

Walkability: Central Boston is one of the most walkable areas in the US. Beacon Hill, the North End, Back Bay, Downtown, and the Waterfront are tightly packed and best explored on foot. The Freedom Trail is literally a walking itinerary. Cambridge is also very walkable once you cross the river. Winter ice is the main challenge; summer heat rarely stops walking.

San Sebastián

San Sebastián is wonderfully compact and best explored on foot. The entire city from Monte Igueldo to Zurriola beach is walkable within 40 minutes. Local buses cover the wider metropolitan area, and the historic funicular climbs Monte Igueldo.

Walkability: San Sebastián is one of Spain's most walkable cities. The entire center — from the old town to Gros, La Concha to Monte Urgull — is flat and pedestrian-friendly. The elegant waterfront promenade is a joy to walk day or night. Only Monte Igueldo requires a climb (or funicular).