This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

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.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

The topiary maze at the Habsburg hunting lodge.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A medieval church built up to defend its village.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

A striking symbol of the Bulgarian capital.

These ancient rune stones plucked from the countryside now call this university park home.

This Swedish astronomical clock was in storage for almost a century before its glorious workings were put on display once more.

Swedish skyscraper with a 90° twist.

Stockholm's narrowest alley is barely over two feet wide.

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

Sweden's "good old days" painstakingly re-created in a model village.

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

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

Along this wire fence, travelers have been leaving a particular memento since 2012.

Iceland's tribute to its thankless civil servants.