Harju County is Estonia's largest and most populous county, home to nearly half the nation's population. The capital Tallinn sits at its heart, but the county also encompasses beautiful coastal areas, forested municipalities, and historic settlements. Harjumaa is the center of the country's economy and culture.

Tallinn's UNESCO Old Town, Viimsi Peninsula and Coastal People's Museum, Keila-Joa Waterfall, Padise Monastery ruins, Paldiski military history sites, Naissaare and Aegna islands, Jägala Waterfall, Türisalu cliff.

Tallinn Airport and the Old Port are the main international gateways. Frequent train and bus lines connect all parts of the county. Estonia's best schools, universities, and healthcare facilities are located here. The road and communications network is well-developed.