This community on a small Venetian island has taken to painting their houses in bright neon hues.

Venice's "Island of the Mad."

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

Go inside to really appreciate this 500-year-old technological masterpiece.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

A cone-shaped top and cylindrical body set this 900-year-old structure apart from other Italian bell towers.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

One of the largest caves in the world open to the public.

During World War II, this rice mill became a Nazi concentration camp.

These pools have been abandoned for over 20 years.

This small chapel is built of human bones and decorated with a golden skeleton.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

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

The stunning interior of this Gothic church is covered in ornate gold details.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Ancient catacombs form the foundation for this Rococo orgy of a church.

Elaborate tile work in this railway station tells the story of Portugal.

A hidden three-foot-wide house separates these two regal churches.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

This charming candle shop has been in business since 1789.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

Portugal's National Pantheon has a history of curses, collapses and financial problems.