Sound travels strangely in this underground whispering gallery.

This legendary dessert was served to Nobel laureates for decades.

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

Maybe the only restaurant in the world where your seat will be signed by a Nobel laureate.

A small church in Uppsala hides the grave of a renowned 18th-century astronomer.

This mysterious runestone embedded in a church wall is linked to the medieval cult of Saint Erik.

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

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

The Swedish flag over this small naval fort signals that the nation is at peace.

Sweden's "good old days" painstakingly re-created in a model village.

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

Stockholm's deepest subway station is also a stunning ecological wonder.

A wooden street sign is the last remnant of this 400-year-old alleyway.

A man has revenged his true love's betrayal through tears and stone genitalia.

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

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

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.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

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

Copenhagen's celebrated theme park and gardens.

The world's first combination ski slope and power plant.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.