Golden Gate Park's historic collection of plants.

In this century-old literary safehouse, print is alive and well.

A 300-ship graveyard, with a few still visible at low tide.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

Olfactory delights in San Francisco's Botanical Gardens.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

A 140-year-old castle with underground caves hidden in San Francisco.

The narrowest street in Paris.

Where the high court feasted, frolicked, and high courtesans put their royal lovers' diamonds to the test.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

The first green space constructed on an elevated viaduct.

This Parisian café sticks almost exclusively to an ethos of reuse.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

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

This massive library holds what was once the largest book collection in the world.

A poignant museum dedicated to the history of the Dutch resistance against Nazi occupation

The former headquarters of history's oldest megacorporation.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

A rare tour of an aristocrat's private home reveals valuable 17th-century paintings from artists like Rembrandt.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

A unique collection of gilded age mechanical pianos.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This cheese shop also houses a museum devoted to Dutch dairy.