Estonia maintains five national parks, 159 nature reserves, and 154 landscape protection areas across 22,089 square kilometers, representing approximately 18 percent of the country's total land area. The State Forest Management Centre (RMK) oversees most protected areas, operating under the Ministry of the Environment since its establishment in 1999. Estonia's protection system divides into strict nature reserves where access requires permission, limited management reserves where designated trails exist, and landscape protection areas where human activity continues under restrictions. The network preserves bog ecosystems covering 22 percent of Estonia's territory, coastal meadows totaling 45,000 hectares, and old-growth forests representing less than 3 percent of remaining woodland after centuries of logging.
Lahemaa National Park, established in 1971 as the first national park in the Soviet Union, covers 747 square kilometers along the northern coast 70 kilometers east of Tallinn. The park protects four peninsulas named Juminda, Pärispea, Käsmu, and Vergi, four bays called Kolga, Hara, Eru, and Käsmu, and 14 percent of Estonia's boulder-rich coastline. Viru Bog within Lahemaa contains a 3.5-kilometer boardwalk completed in 2007, crossing raised bog formed over 9,500 years where water pH measures 3.5 to 4.5 and peat depth reaches 7 meters. The park contains 839 plant species, 222 bird species including lesser spotted eagle and black stork, and 47 mammal species. Seven manor houses within park boundaries include Palmse Manor, reconstructed between 1697 and 1730 in baroque style, and Sagadi Manor from 1749, now housing a forestry museum with 110,000 cataloged items. Lahemaa receives approximately 600,000 annual visitors, with trail infrastructure including 72 kilometers of marked coastal paths and 12 observation towers built between 2005 and 2019.
Soomaa National Park, designated in 1993, encompasses 390 square kilometers of flood-plain forests, raised bogs, and river meadows in southwestern Estonia 105 kilometers from Tallinn. The name means "land of bogs" in Estonian, referencing the park's five major bog systems: Kuresoo, Valgeraba, Öördi, Kikepera, and Riisa. The park experiences a fifth season called "veeaeg" or flood-time, typically occurring between March and May when snowmelt and rainfall raise the Halliste, Raudna, Lemmjõgi, and Navesti rivers by 2 to 5 meters, inundating up to 175 square kilometers. During veeaeg, traditional dugout canoe travel called "haabja" becomes the primary transport method, with RMK renting 15 historically accurate boats carved from single aspen logs. Soomaa contains 170 bird species including golden eagle, which returned to nest in 2001 after 50-year absence, and maintains Estonia's largest population of wolves with estimated density of one individual per 100 square kilometers. The park's Riisa Bog Trail extends 6.2 kilometers through peatland where vegetation includes carnivorous sundew and bladderwort adapted to nutrient-poor conditions measuring nitrogen concentrations below 10 milligrams per liter.
Matsalu National Park protects 486 square kilometers of the Kasari River delta and Matsalu Bay on the western coast, established in 1957 as a nature reserve and upgraded to national park status in 2004. The bay serves as a critical stopover on the East Atlantic Flyway, where spring migration between late March and early May brings 2 million waterfowl including barnacle geese, whooper swans, and pintails. Peak counts occur during the third week of April when daily observations reach 300,000 birds. The park records 282 bird species, with 175 nesting within boundaries. Coastal meadows covering 3,050 hectares require annual mowing to prevent succession into shrubland, a practice maintained through RMK contracts with 47 local farmers grazing 1,800 cattle from May through September. Matsalu Bay averages 1.5 meters depth with maximum depth of 3 meters, creating extensive reed beds dominated by Phragmites australis growing to 3 meters height. Eight observation towers positioned along the coast include the Keemu tower built in 2003, offering views across 12 kilometers to Saaremaa. The Matsalu Nature Centre in Penijõe village operates exhibits documenting migration patterns using ringing data from 420,000 birds captured between 1951 and 2023.
Vilsandi National Park, Estonia's smallest national park at 238 square kilometers including 161 square kilometers of marine territory, protects 160 islands and islets in the Baltic Sea west of Saaremaa. The park was established in 1910 as a bird reserve by lighthouse keeper Artur Toom, making it one of Europe's oldest protected areas, and received national park status in 1993. Vilsandi Island itself covers 9 square kilometers, supporting colonies of 7,000 breeding pairs of common eider, 1,200 pairs of barnacle goose since colonization began in 1984, and 450 pairs of Arctic tern. The lighthouse on Vilsandi, constructed in 1809 and rebuilt in 1971, rises 42 meters with visibility of 20 nautical miles. Grey seals numbering approximately 800 individuals haul out on outer skerries, particularly Innarahu and Vaika islands, with pup counts increasing 4 percent annually since 2010. Coastal meadows on inhabited islands like Kihelkonna parish maintain plant diversity of 480 species per hectare through traditional management. Ferry access to Vilsandi operates only June through August, departing from Papissaare on Saaremaa mainland, with crossing time of 45 minutes dependent on sea conditions that restrict travel when waves exceed 1 meter.
Karula National Park in southeastern Estonia covers 123 square kilometers of hilly terrain within the Otepää Upland, designated in 1993 to protect landscape shaped by the Weichselian glaciation ending 11,700 years ago. The park contains 38 lakes including Ähijärv at 14.9 hectares and maximum depth of 5.4 meters, formed in kettle holes left by melting ice blocks. Relative relief reaches 50 meters between lake surfaces and surrounding hills, creating Estonia's most varied topography outside the Haanja region. Karula supports 55 percent forest coverage dominated by Norway spruce, Scots pine, and downy birch, with 18 percent of woodland classified as semi-natural indicating minimal human intervention since 1850. The park contains 870 plant species including 28 orchid species, representing 70 percent of Estonia's orchid diversity. Small-scale agriculture continues on 12 percent of park area through agreements with 23 farmsteads, maintaining cultural landscape of hay meadows and stone fences documented in cadastral surveys from 1683. The Ähijärv Nature Trail, constructed in 1997 and rebuilt in 2016, forms a 4-kilometer loop through mixed forest containing specimens of Scots pine exceeding 200 years age and 28 meters height.