During the renovation of this bas-relief, the constructors added one unusual element.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

Atop this former dutch railway office sits an interstellar work of art.

'The Letters of Utrecht' lays out a ribbon of poetry one letter at a time, with no final verse in sight.

The facade of this bank has changed little over the centuries, including its unique welcome sign.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

The former headquarters of history's oldest megacorporation.

Europe's official "zero-level," the equator of elevation.

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

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

This plaque marks the former home of one of the first women physicians in the Netherlands.

A unique work of automotive art calls this shopping center home.

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

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

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

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This unattributed sculpture in Amsterdam is hiding in plain sight.

A beautifully eclectic mix of architectural styles.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

A restaurant and observation deck built in a unique broadcasting antenna.

The best bagels in Berlin are tucked away in an independent bookstore.