One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The San Marino-Rimini railroad was short-lived but this tunnel once provided shelter for hundreds of refugees during World War II.

A historic cavernous cistern lies hidden behind a wall at San Marino’s stamp and coin museum.

Where members of the Crossbow Corps of San Marino demonstrate their skills.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

Discover what life is like on Amsterdam’s famous canals.

This historical Netherlands fortress still bears the marks of its single siege.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Colorful and chaotic stacked hotel in North Holland.

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

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

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

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

The attic of a four-century-old canal house hides a clandestine church.

A tragic legacy of the attempt to beautify Skopje and line the pockets of corrupt politicians

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

In the hometown of the Catholic saint and Nobel Peace Prize winner, a memorial dedicated to her legacy.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Hilltop garden on the site of an old fortress overlooking the Mediterranean Sea.

This public amphitheater was once a key part of Monaco’s defense strategy.

This virtually windowless mass of smooth concrete is the only Catholic church in the city.

A tiny church on a man-made island in the Adriatic.