Muiža rakstos pirmoreiz minēta 17. gs. sākumā, taču klasicisma stilā celtās pils veidols tapis 1835. gadā. Penijē muižas būtisks likteņa pavērsiens (atšķirībā no daudzām citām muižām) bija apstāklis, ka tajā izveidoja Matsalu rezervāta (pirms nacionālā parka izveides) apmeklētāju centru. 2000. gadā muižas pili restaurēja un tajā ierīkoja nelielu ekspozīciju. Apmeklētāju centrs te pastāv joprojām, tādēļ šeit var iegūt nepieciešamo informāciju. No ārpuses var apskatīt arī citas muižas saimniecības ēkas.

Muižas pils (no sarkaniem ķieģeļiem celta) ir meklējama ceļu krustojumā pie Gaujām – 2 km ziemeļaustrumos no Jaunpiebalgas centra, Gaujas labajā krastā. Līdz 1918. g. muižas īpašnieki bija slaveno grāfu Šeremetjevu dzimta. Muižas pili nodedzināja 1905. g. nemieros, bet vēlāk atjaunoja. Muižas pilī bijušas dažādas iestādes: slimnīca, kolhoza „Piebalga” administrācija, mūsdienās – pašvaldība un dažādu sadzīves pakalpojumu sniedzēji.

Mooste Manor is located on the Mooste lakeshore. The attractive mansion is complemented by a large number of outbuildings in Historicist style, and a landscaped park in English style. The mansion houses the local school, the woodwork shop has become a guesthouse, the stable of workhorses is home to restorers, the manager´s house is the Centre for Art and Social Practice while the cattle shed is a concert hall today.

The Lielstraupe Castle is the only building in Latvia which contains a Medieval castle and a church.  Work on the castle began in 1263.  The building suffered great damage during the 17th and 18th centuries, as well as during the riots of 1905.  The complex was restored in 1909 by the architect Wilhelm Bockslaff.  There are several artistic monuments in the church – the organ loft from the 17th century and the pulpit paintings of the 18th century.  In 1944, two stained glass windows produced by the artist Sigismunds Vidbergs were installed at the church – Golgotha and Birth of Christ.  The tower contains a clock produced by a local clockmaker, and there is a sun dial on the wall of the church.  Visitors to the park of the castle will see the wooden bell tower which dates back to 1744.  A memorial plaque to men who fell during World War I and Latvia's liberation battles was installed in the church in 1938.  A drugs treatment hospital was installed in the castle in 1963.  The church is open during worship services, and the rest of the complex can only be viewed from the outside.

The Raudondvaris Castle is on the right bank of the Neveža River in Raundondvaris.  The estate and a park that covers 3.8 ha has two buildings, an orangery, a stable for horses and a cellar.  Alongside the estate in 1834 was a park that was rebuilt in the 20th century with new plants and flowerbeds that featured ancient types of roses.  The northern part of the park is forested, with maple, pine and linden trees, as well as Edelweiss that blooms in the spring.  Paths in the park lead to a local environmentally protected area.

The construction of the state began in the early 20th century.  The mansion was built of bricks and fieldstones between 1905 and 1911 in the styles of Historicism and Art Nouveau.  The estate was owned by engineer and professor Stanislav Kerbedz from St Petersburg, the first Russian engineer to develop principles for the architectonic aspects of bridges.  These were used during the latter half of the 19th century, and Kerbedz led the construction of the Nikolayev bridge across the Neva River in St Petersburg.  Kerbedz’s wife, Yevgenia, was well known as a lover of art, and she brought various art objects to the estate from Italy.  The Lūznava Estate was a popular place for gatherings of artists during the summers.  Among those to visit was the distinguished Lithuanian painter and composer Mikalojus Čiurlionis.  The estate is surrounded by a 23.7 ha landscape park with a system of ponds.  Near the estate is a statue of the Madonna, which was carved by an unknown Italian artist.  The statue was damaged and thrown into a pond during World War II, but it was restored in 1991.  Reconstruction of the main building of the estate was complete in 2015, and today it is a modern and international centre for environmental education and the arts.

The Kretinga Estate park is one of the oldest ones in Lithuania to have survived to the present days.  Established in the 16th and 17th century, it is a mixed-style park that covers 23 ha of land.  The southern part of the park has an astronomical calendar with a sundial, a hedge, allies, and flowerbeds and rock gardens with dahlias, peonies, tulips and roses.  There are trails for strollers and areas for relaxation.  Particularly popular among local residents is the restored fountain in the park.

The estate in Milzkalne that is along the banks of the Slocene River dates back to the 15th century, when it was built as a closed complex for the Livonian Order.  It is the only fortified estate of its type to have survived to the present day, and it was once used as a hiding place for aristocrats during an attack.  The gate towers with their ornate weather vanes were built in the late 17th century, and the ancillary buildings date back to the 18th and 19th century.  A brick wall with firing apertures survives.  The Latvian Road Museum is in one of the wings of the complex, while the former mansion offers accommodations, tours and tastings of local goodies.

The oldest elements of the Oleri Estate date back to the 17th century.  Initially there was a wooden mansion with an ancillary building.  The new centre was built in the late 18th century in the style of Early Classicism.  After agrarian reforms, the mansion housed an elementary school, and during the Soviet occupation and until the 1970s it was a school for children with mental disorders.  The mansion suffered in a fire in 2000, after which it was restored.  A local organisation was of great importance in this regard.  The mansion is known for its Classicist paintings, with a unique “Painting Gallery.”  The mansion is surrounded by a lovely park.  The Oleri Estate is known for hosting chamber music concerts.  The local Oleri swamp has a wooden pathway and a little viewing tower.