This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

A tongue-in-cheek arcade where the games are based on everyday life.

A faceless folk hero and his legacy of comfortable, expertly-crafted chairs lives on in a small Tasmanian town.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

The largest Neolithic ruins in the world hide a notably clean prehistoric metropolis.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

The remains of Crystal Palace Great Exhibition of 1851.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

You can row a boat through this ancient underground reservoir.

A collection of grotesques lines the walls of this Italian villa.

A stunning fountain depicting a mythological she-goat carved directly into the rocks on the grounds of a Renaissance palace.

A magical, if a bit tacky, 1960s castle conjures up medieval fairytales and Greek mythology.

Overlooked amid the tourist bustle of Florence, this museum is dedicated to the craft of stone inlay.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

The oldest operating pharmacy in the world features 800-year-old recipes.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

One of the world's largest salt caves is filled with fragile salt sculptures, salt rivers, and huge salt megadomes.

A gargantuan crystal kingdom.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.