An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The art museum is decorated with creatively remodeled pre-Nazi swastikas.

Copenhagen's celebrated theme park and gardens.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

An abstract monument to a symphonic composer.

Pablo Neruda's custom-built lover's nest was made to remind him of the sea and named after his mistress' hair.

The world's largest secondhand book market is a haven for bibliophiles and bargain hunters.

The name of this ancient Indonesian temple translates as "Elephant Cave" but it could be more accurately called "The Hellmouth."

Hindu temple of the dead home to hundreds of long-tailed macaques.

An amazing collection of wax anatomical models and terratological models.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

One of the largest ancient geoglyphs in the world is a tall desert god used for predicting the weather.

Geothermal waterfalls in Tuscany.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.