Museum deep in the catacombs of St. Michael the Archangel Church is explored by touch, sound, and smell.

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

A memorial to the murdered Jews of Kaunas.

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

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

A concrete mushroom that divided Stockholm residents for nearly a century.

What looks like a birch tree smushed between two pieces of glass often confounds commuters.

This unique sculpture is often overlooked by pedestrians.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

Sweden's oldest animated sign is still lighting up the skyline today.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

A former suicide bridge is now accumulating symbols of love instead of a body count.

When this 18th-century observatory's meridian was moved, it set Sweden's time back by 0.04 seconds.

Stockholm's tiniest statue is of a small boy looking at the Moon.

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

A man has revenged his true love's betrayal through tears and stone genitalia.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

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

This church is named for one of the most dramatic tales in the early Christian church.

This unique building in the main square stands out among the city's typically Baroque architecture.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

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

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