One of the world's first dedicated bank buildings in the world is now the oldest one.

Inside this church, a monument honors the first burial site of the famed philosopher.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

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

A miniature model of the iconic Stockholm department store.

There's something in the air as history repeats itself at this museum dedicated to the Swedish pop band.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

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

A temporary art piece to celebrate LGBTQ Pride is now a permanent part of Stockholm's traffic landscape.

A historic neighborhood church is reborn as a psychedelic arts collective.

This plaque commemorates the call between Alexander Graham Bell and Thomas A. Watson.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

This parking garage was the site of what was - at the time - the largest cash robbery in history.

Historic Hull Street was actually the first street with a proper name in the Boston area.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

This memorial honors those who served on Gallops Island Radio Training Station during the second World War.

The location of one of the first private Catholic schools in the country, providing a valuable sanctuary during the tumultuous period when Protestant and Catholic students were at odds.

Stolen goods adorn the organ at Old North Church.

The site of Paul Revere's historic two lantern warning.

A school used as a model for public education across the country.