This now abandoned restaurant provides some of the most amazing views of Lisboa.

This little-known national museum houses over 40,000 works of art from across the world.

One man's remarkable private collection of art from around the world.

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

This impressive rupestrian engraving dates back to the Upper Palaeolithic period.

The medieval town's star-shaped walls are geometrically dazzling, though not entirely impenetrable.

These rock drawings in the Côa Valley also create an ancient optical illusion.

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

This is the oldest Roman-made bridge in the city still existing in its original state.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

Gargantuan home of Russian science.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

This ship offers visitors the chance to spend the night aboard a former floating hospital for fishermen.

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

A free public golf course hides in plain sight in the heart of Scotland’s capital.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

A local student's chance encounter with Keith Haring led to the creation of one of Europe's largest murals.

This castle has links to Portugal’s founding and struggles for independence.

An artist's whimsical transformation of everyday objects.

Pilgrimage site for star-crossed lovers.