Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

Once housed in the towers of this Gothic church, this 17th century clock still ticks today.

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

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

This unattributed sculpture in Amsterdam is hiding in plain sight.

A floating cat sanctuary on an Amsterdam canal.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A collection of biblical memorabilia.

The attic of a four-century-old canal house hides a clandestine church.

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

Amsterdam's former hotspot for public executions and dissections.

A beautifully eclectic mix of architectural styles.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

Amsterdam's Red Light District leaves little to the imagination.

The history and future of cannabis.

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

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

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.