Set along the shoreline of Santa Cruz Island in the Galápagos, the Charles Darwin Research Station introduces visitors to a living laboratory shaped by volcanic land and rare wildlife. Located near Puerto Ayora, the station stands as the scientific heart of the islands, where researchers from around the world work side by side to understand and protect species found nowhere else on Earth.

Ullapool is a village in the Scottish Highlands about 65 miles north-west of Inverness. Ullapool is known for the progressive, ecologically sound practices of its inhabitants and is the center for the Highland Environment Centre; a project of the Highland Eco Trust.

Langtang National Park lies just north of Kathmandu, yet it feels far removed from the city’s pace. As Nepal’s first Himalayan national park, it stretches from lush river valleys to high alpine ridges close to the Tibetan border. Snow-covered peaks such as Langtang Lirung rise above forests of oak, maple, and rhododendron, creating dramatic shifts in scenery over short distances.

Sacramento is the capital of California, located where the Sacramento and American rivers meet in the northern Central Valley. The city is surrounded by fertile agricultural land and serves as a major center for government, education, health care, and regional commerce. Its downtown includes the State Capitol, historic Old Sacramento, museums, restaurants, and tree-lined streets, while neighborhoods extend across a broad urban area.

Situated on the coast of Tuscany near the Tyrrhenian Sea, Livorno, Italy, is a popular stop on Mediterranean cruises and an important commercial and industrial port. It was founded on a former auxiliary Pisan port between the late 16th and early 17th centuries on the orders of the Grand Duke Cosimo I, who made it Tuscany's main outlet to the sea.