Tombs containing the remains of some of the first and most important professors of medieval Bologna

A papal fortress built to assert Roman control over the independent city of Bologna

A memorial to the deadliest terror attack during an unsettled period of Italy’s recent history.

All that is left of this medieval castle is two towers, both of which now display a visible tilt.

Inside this medieval defense tower stands a modern residential building.

A rare example of an octagonal Catholic church.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A monumental toilet that is also host to rare plants.

The highest point in Belgium is a staircase to nowhere.

A giant bug impaled on a 75-foot-tall needle.

Above the door of a house, a plaque claims to commemorate the future living place of the inventor of time travel.

This statue of a studious young woman stands at the site of Leuven's first college to accept female students.

Banished from town, this local jester concocted a clever return.

The largest carved family tree in Europe is 135 square meters.

A pair of iconic characters from the local newspaper argue over pet snails.

A trompe-l'oeil fresco celebrating 250 Walloon figures who left their mark on the region.

This unfinished sculpture, once loathed by locals, ultimately earned their affection.

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

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

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

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Dedicated to one of the author's most iconic works.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.