An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

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

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

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

Colorful and chaotic stacked hotel in North Holland.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

Peek through a transparent pyramid and drink in the mountain made of books.

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

Museum preserving torture methods from the past.