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

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

The mirrored section takes the shape of Hebrew characters when viewed from above.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Amsterdam's former hotspot for public executions and dissections.

A beautifully eclectic mix of architectural styles.