This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

A short hike into the mountainside forest reveals a decaying 1890s town.

A giant Troll lurks under one of Seattle's oldest bridges.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

A walk through the historic city center, under the streets of Seattle.

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

A beautifully eclectic mix of architectural styles.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

Oldest Museum of the Netherlands is a true cabinet of curiosities.