"Holy Wisdom" overlooks the city that became its namesake.

Sofia's legislative center is continuously reinventing itself.

A striking symbol of the Bulgarian capital.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

Gladiators once walked this ancient, subterranean passage.

Monasteries on rock pillars, once accessible only by frayed ropes.

Believed to be the only Orthodox church in the world that features a free-standing pulpit.

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

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

This contemplative sculpture made out of old machine parts is meant to be the first in a series of sculptures around the world.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Prank chair from an 18th-century Danish royal court shows the eternal popularity of fart jokes.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

Site of the first radio and telephone broadcasting companies in Copenhagen.

The house where a Danish physicist discovered the connection between electricity and magnetism.

The only surviving piece of Copenhagen's 16th-century defensive wall.

Denmark’s oldest bakery is home to the 'Wednesday Snail,' one of the best cinnamon rolls on the planet.

This sculptural representation of an Andersen fairy tale had to be pushed away for being too grim.

Norway's oldest cathedral still in use.

An opportunity to walk in the footsteps of Nobel Peace Prize winners.

An impressive museum dedicated to the resource that made the Scandinavian country rich.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

These 4,444 wooden steps straight up a mountain were built to serve a hydroelectric power station but these days, they're mostly used by hikers.