The absurd creation is a compulsory destination for selfies in Buffalo.

A natural gas leak provides a flickering flame beneath a waterfall.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

Mounds, rune stones, and a 1,000-year-old church, left behind by Denmark's first two kings.

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.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

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

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

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.

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

An ancient Viking runestone hidden in plain view in Stockholm's old town.

This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Copenhagen's celebrated theme park and gardens.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Designed by Gustave Eiffel before his famed tower.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Elaborate tile work in this railway station tells the story of Portugal.