The massive mountain ash that once stood at this site was cut down in an effort to prove that it was, indeed, the tallest of its kind.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

Across the islands, baked goods, sauces, and much more are for sale 24/7.

The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.

The oldest stone house in Paris was built by its most famous alchemist.

One of the largest caves in the world open to the public.

The Adriatic's most famous wind can be reliably experienced in the city's Marina.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

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

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

A great example of the inventive canal bridges that were deliberately split down the middle.

This medieval manor house was equipped with secret compartments for hiding priests.

Where royalty waits in the height of luxury.

A tiny house showcases the busy life of a local gnome.

While most bridges allow roads to pass over water, this one allows water to pass over a road.

Stained-glass windows inspired by Vincent van Gogh's paintings decorate this church in the town where the artist's career began.

Nestled in the woods lies this land art project: a hybrid between park, maze and natural monument.

Dutch woodpile home in the forest.

The world's longest wildlife overpass provides Hilversum's critters with a safe alternative to trying their luck on the roadway.

This museum is filled with an eclectic collection of unique inventions.

The Rozenberg wind wall in South Holland makes for smooth sailing through the Calandbrug canal.

The place where Czar Peter I of Russia resided in 1697 during his Grand Embassy.