It houses the remains of a 17th-century version of the Titanic.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

This chimerical bridge/tunnel appears to dead end right into the sea.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

The real life town from the Pied Piper of Hamelin has a mechanical puppet show that retells the famous story many times a day.

Albert Einstein would often sit in this chair during visits to the observatory to discuss science with Willem de Sitter.

This 17th-century house has a long and colorful history.

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

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

The location of the world's first telescope demonstration.

This cannonball has been lodged in the church wall since a 1695 bombardment destroyed the city center.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

In 1927, a biplane disappeared while attempting to complete the first non-stop transatlantic flight between Paris and New York City. This memorial stands at the last place it was seen.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

This panoramic lift provides a futuristic ride up San Pedro Mountain.

Seaside ruins of a settlement that date back to the first century B.C.

A 12th century church completely covered in shells.

"Satisfying" is a good way to describe these beautifully aligned rows of Spanish mills.

Gustave Eiffel's masterpiece until the Eiffel Tower was built.

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

Sip cherry liqueur at a bar dating back to 1840.

Park and playground dedicated to one of the most well-known Portuguese-language cartoons

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.