This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

This former cigarette factory was built in a style inspired by Islamic architecture.

A monument hidden in the woods built in 1938 as a getaway for a Dutch museum curator.

Made of 41,900 pieces of mosaic, it took two years to piece together this giant egg.

Dedicated to the outnumbered Finnish forces who pushed back Soviet forces during the conflict.

A subterranean house of worship carved right out of the bedrock.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

This ten-ton fruit sculpture celebrates the Finland homeland.

An alien church provides much needed silence in the midst of a Finland shopping center.

Visit Finnish architect Matti Suuronen's first UFO-shaped home.

Hundreds of signs pointing to the birthplaces of current Helsinki residents form stalactites on the ceiling of the cave-like Kamppi metro station.

A small island dotted with old, historic Finnish buildings.

An abstract monument to a symphonic composer.

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

Colorful and chaotic stacked hotel in North Holland.

The last of Amsterdam's original sea level markers remaining in place.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

Above the heads of passersby stands a small statue commemorating soldiers from the Boer War.

A set of seven houses, each built in a style that represents a European country.

This unattributed sculpture in Amsterdam is hiding in plain sight.

An Amsterdam School landmark combining a museum and social housing.