This colorful but controversial ceiling has been likened to a 21st-century Sistine Chapel.

At 929 pounds and 26 feet tall, this stainless steel fork can only be used by the likes of King Kong.

Large Hadron Collider and the Birthplace of World Wide Web.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The world's largest model of our planetary system.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

2300-year-old Roman road connecting the empire.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

An old Danish political institution where members of government can grab a drink off the record.

The oldest amusement park in the world has been providing a nice spot to have some fun since the 1500s.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

Museum devoted to the artificial language of Esperanto.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Op-art architecture designed for happiness.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

An ancient holy well said to be used by the patron saint of sailors and travelers, lost in the boggy west of Valentia Island.

A diminutive, thousand-year-old church believed to be the smallest in Ireland.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

A moody and picturesque riverside ruin overgrown with vegetation.

Modern sundial uses ancient methods to tell time and date perfectly.

A stunning Victorian abbey and walled garden on a lakefront.