The prototype for all Nazi concentration camps.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

A little sculpture with a large wardrobe.

This interactive sculpture allows visitors to leave a message in case a friend passes by.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A public urinal so pretty, it was declared a national monument.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

This striking structure, with balconies jutting out like hedgehog spines, combine cutting-edge design with a playful approach to light and space.

This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

This chimerical bridge/tunnel appears to dead end right into the sea.

Swedish skyscraper with a 90° twist.

Denmark’s never-ending bridge.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

Wars fought and wars won are remembered by these abandoned bunker ruins.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

The reconstruction of this prominent building fulfilled a long-written command.

3,000 market stands in five former Zeppelin hangars.

Latvia’s first skyscraper, nicknamed ‘Stalin’s birthday cake.’

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

The European Union’s tallest freestanding structure provides radio and television broadcasting to half of Latvia.