A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

The Guardian of Tallinn.

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

A stone woman in a stylized dress honors a courageous politician.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

Feast on buckets of garlicky snails.

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

Eat the ultimate iteration of Portugal's most beloved pastry.

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

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

Vibrant street art created with mixed media.

This architectural oddity is an oasis of green on the outskirts of Valencia.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

This house's itty bitty size means no humans allowed.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

One of Europe's largest supercomputers is housed inside of a disused chapel.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

A stately palace has been converted into the world's largest cannabis museum.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.