A musical instrument played by the sea.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

After this one-of-a-kind palace was built the architect's hands are said to have been cut off to keep it that way.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

This micro-nation may be some sort of prank, but its constitution sure seems official.

A narrow strip of land is home to the tallest migrating dunes in Europe.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

The silly symbol for an underground protest group is now scattered around the city.

These small, triangular, colorful houses are a staple of Madeira Island.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

A micronation on an islet along the coast of a Portuguese island.

A small but charming botanical garden that contains many exotic plant species.

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

A perfectly circular lake is formed by the crater of an ancient underwater volcano.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

Europe's oldest still-operational tea farm also boasts a spectacular view.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

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

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

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.