This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

North America's largest accredited model railroad museum.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

A collection of trees from various corners of the world call Stockholm University home.

Unfortunately, you can no longer spend a night in this single-person treetop hotel.

A geological wonder that helped fuel myths of trolls and giants.

A tiny village is home to the world's only diner completely devoted to the many varieties of traditional Swedish dumplings.

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

The world's biggest version of the popular Swedish souvenir.

Sweden's southernmost prehistoric rock art is hidden just outside Gothenburg.

Sweden's oldest street has not changed for nearly a millennium.

Walking through this narrow gorge will make you feel like you've fallen into a fairytale landscape.

An otherworldly, fossil-rich cobble beach holds Viking graves, cairns, and other remains.

This castle ruin in the middle of nowhere is a gem for wildlife enthusiasts.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

A floating underwater hotel, created by a Swedish artist.

This chimerical bridge/tunnel appears to dead end right into the sea.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

A rare surviving Victorian greenhouse designed specifically to house giant water lilies.