Kaunas Castle, Lithuania.

Freedom Monument in Riga, honoring the dead of the Latvian War of Independence of 1918-20.

Historic Centre of Riga, Latvia.

Sunset over Riga, Latvia.

Historic Centre of Riga, Latvia.

Three Brothers, the three oldest houses in Riga, Latvia, dating to the 16th century.

Latvian National Opera in Riga, Latvia.

House of the Blackheads in Riga, Latvia. The original building is from the 14th century and served as headquarters for the Brotherhood of the Blackheads, a guild for unmarried merchants. The Mannerist decoration was added in the 17th century.

That building was destroyed during WWII. The current one was rebuilt in 1996-99.

Art Nouveau house in Riga, Latvia.

Art Nouveau house in Riga, Latvia.

Small Guild in Riga, Latvia.

Turaida Medieval Castle, Latvia.

Turaida Museum Reserve, Latvia.

"Sleep Not, O Sun, in the Apple Orchard" Sculpture in the Folk Song Park in Turaida Museum Reserve, Latvia.

Palmse Manor, Estonia.

Palmse Manor in Lahemaa National Park, Estonia.

Oru Castle, Estonia.

Cathedral of the Ressuction of Christ in and Swedish Lion  monument in Narva, Estonia.

The Orthodox Cathedral was built between 1890 and 1896 in the Neo-Byzantine style to serve the workers of the Krenholm Manufacturing Company. It was the only building standing after the city was bombarded in WWII.

Vihula manor in Lahemaa National Park, Estonia. Although the estate dates back o 1501, the current manor was built around 1892, after the old one was destroyed in a fire.

Sights from Tartu, Estonia, showing the University, the Town Hall Square and the "Kissing Students" Sculpture.

Tallinn Gate in Parnü, Estonia.

Haapsalu Castle, Estonia.

Kiuu Tower in Estonia.

Viljandi suspension bridge, Estonia.

Hermann castle in Narva, Estonia. Originally built by the Danes, it was held by the Livonian Order after 1346. They were the ones who built the Hermann Tower.

Pühtitsa convent is a Russian Orthodox convent in Estonia. It was founded in 1891 and has become the largest Orthodox community in the Baltic.

Rakvere castle, Estonia.

Tahkuna lighthouse in Hiiumaa Island, Estonia. It dates from 1873 and it's the tallest lighthouse in Estonia, at 42.6m.

Alatskivi Castle, Estonia. The original building dates to the 17th century, but it was rebuilt by Baron Arved von Nolcken in the 1870's in the style of the Balmoral castle in Scotland.

Keila waterfall, third largest in Estonia.

Valaste and Jägala waterfalls in Estonia.

Nõmmeveski waterfall in Valgejõgi river, Estonia.

Blue Lake in Antü, Estonia.

Keri Lighthouse on Keri Islet, Estonia. It's the oldest lighthouse on the Gulf of Finland, established in 1719 by Peter the Great. The current structure dates from 1857.

Sights from Tallinn, Estonia: Maiden's and Kiek Towers, St. Olav's church, Town Hall and St. Nicholas' church.

Churches in Tallinn, Estonia.

Dome Church, or St. Mary's Cathedral, is the oldest church in Estonia, having survived a 17th century fire. Initially established as a Catholic church by the Danish, it became Lutheran during the Reformation and it's now the seat of the Archbishop of Tallinn, leader of the Estonian Evangelical Lutheran Church.

The Holy Spirit Church is a Lutheran church, the first one to have services held in Estonian. In the exterior wall, there's a still functioning clock carved in wood.

The Alexander Nevsky Cathedral is an orthodox church, dedicated to Saint Alexander Nevsky, who was Prince of Novgorod, of Vladimir and of the Kievan Rus in the 13th century, and won the Battle on the Ice, against the Livonian Order.

St. Olav's church dates to the 12th century, although it was extensively rebuilt since then. It became a Baptist church in 1950.

Alexander Nevsky Cathedral in Tallinn, Estonia. This Orthodox church was built between 1894 and 1900 in Russian Revival style, during a period of russification of Estonia.

Tallinn Old Town, Estonia.

Tallinn Old Town, Estonia, showing the Town Hall and surrounding streets.

Viru Gate, entrance to Tallinn Old Town, in Estonia. The first wall around Tallinn dates to 1265 and it was only 5 m tall. It was built by order of Margaret Sambiria, Queen of Denmark and ruler of the Duchy of Estonia.

Doors on Tallinn Old Town, Estonia.

Boca do Inferno in Cascais, Portugal.

Lighthouse of Santa Marta in Cascais, Portugal.

Basilica of the Royal Palace of Mafra, Portugal. The interior uses local rose and white marble.

Library of the National Palace of Mafra, Portugal. Designed in Rococo style, the library holds 36 000 books. Bats are used to keep pests under control.

Main façade of the National Palace of Mafra. The façade is 220m long and built in local limestone. The church is located in the center, with the wings of the palace extending for both sides.

Ornate, decorative wood window frames - called nalichniki - from Russia.

Ulmer Münster, Lutheran church in Ulm, Germany. Its steeple measures 161,5 m, making it the tallest church in the world. Construction started in 1377, and was only finished in 1890.

Dolmen of Menga in Antequera, Spain. This is one of the largest megalithic structures in Europe and is dated to aprox. 3600 BC.

The Hyde Mill, named after William Hyde, who established it in 1856, in Iowa County, Wisconsin, USA.