A spectacular cave and a beguiling lake.

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

Bizarrely-painted church designed by a controversial artist.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

A Chinese meditation center in the middle of rural Sweden, partly funded by a member of ABBA.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

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

Swedish skyscraper with a 90° twist.

The world's largest model of our planetary system.

The world's first ice hotel is still one of the most elaborate and beautiful.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

Legend has this precariously placed rock was placed by giants. Science has another explanation.

This fantastical icy castle is built anew every winter.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

This Denmark theme park is part family attraction, part experimental archaeology project.

Four alabaster giants contemplate the tides on the shore of Denmark.

This sublime architectural marvel is a rare example of an expressionist church.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.