Tyresta National Park, National park in Tyresö Municipality, Sweden

Tyresta National Park is a protected nature reserve with ancient woodland, thick pine forests, bare flat rocks, and multiple lakes spanning 5,000 hectares. The area also features a visitor center in Tyresta By that includes a café and farm shop for guests.

Farmers in Tyresta cut wood only for household needs until the early 1900s, while other forests near Stockholm were heavily logged. In the 1910s one farmer refused to sell his forest, which stayed uncut and became the core of the future park. Stockholm city bought the old-growth forest in 1936, and in 1993 the central parts of the reserve became Sweden's 23rd national park.

Tyresta by, at the park's centre, preserves a cluster of log-timbered farmhouses mostly from the 1800s; a rune stone behind one farm and burial fields show the village existed in the late Iron Age. A Viking-era brooch, the Tyresta brooch, was found here during water and sewage works in the 1990s. Nationalparkernas hus in the village holds exhibitions, a film room and lectures.

The area lies about 20 kilometers from Stockholm and offers around 55 kilometers of marked trails suitable for different fitness levels. Visitors should wear sturdy footwear and bring weatherproof clothing, especially in the damper areas around the lakes.

The forest escaped the heavy logging that cleared other woods around Stockholm: in the 1910s one farmer refused to sell his trees, and that stand became the core of the later park. Some pines here are up to 400 years old, and the low site index keeps growth slow.