You can crawl inside this atmospheric 5,000-year-old tomb.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

Ruins of a German Castle on top of a towering stone pillar.

The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

This professional clown's home is an outsider art wonderland.

A gateway to a mysterious network of underground tunnels.

This magnificent abandoned hotel has long been haunted by its Nazi past.

This historic Victorian hotel has a scandalous history of affairs and murder.

An 18th century monument regularly tagged with unsettling graffiti referencing a 1940s unsolved murder.

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

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

A curious collection dedicated to human and animal anatomy and pathology.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

This grave resides at the crossroad of three parishes.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The largest greenhouse in the world is home to over one million types of plants.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

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

Bioluminescent firefly squid light up this Japanese fishing port.

Once the most densely populated place in the world, this island is now a ghost town.

Hot springs monkey spa in the middle of Hell's Valley.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.