Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

Over 1,000 pieces of one of the most niche art objects imaginable: the glass paperweight.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

This stunning concert hall has become a symbol of Iceland's national recovery.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

Iceland's tribute to its thankless civil servants.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Elevated freight railway turned wildly successful urban park.

New York City's smallest piece of private property.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Giant marble phalluses on the sacred island of antiquity.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”