One of the first monuments dedicated to the accomplishments of the great Vice Admiral, Horatio Nelson.

Launch site for nuclear war against Western Europe.

Sculpture garden of religious statues made it through Soviet rule.

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

Finland's northernmost zoo is home to the country's only polar bears.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

The king of U.S. high points towers over every other peak on the continent.

These engineering masterpieces are a dominant feature of the Belfast skyline.

The modern birthplace of Irish freedom.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

A little sculpture with a large wardrobe.

Climb inside an iron crystal magnified 165 billion times its normal size.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

A curious art park at the geographic center of Europe is home to 3,000 television sets and other wonders.

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

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

A black cat protests the City Guild in Riga's Old Town.

Flamboyant architecture from the turn of 20th century.

3,000 market stands in five former Zeppelin hangars.

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

The Guardian of Tallinn.