This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

An ancient necropolis of magnificent tombs.

An abandoned film set location for a remote spaceport in a galaxy far, far away hides in the Tunisian desert.

The tiny Belgian town's ancient version of Mardi Gras involves eerie wax masks, sticks for warding off evil, and ostrich plume hats.

A magnificent place to see authentic paleolithic cave paintings that are an astounding 33,000 years old.

This striking sculpture of Icarus honors Greece's fallen flyers.

A model solar system adds a celestial touch to this suburban park.

A centuries-old forgotten underworld lies beneath Malta.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

Inside a busy metro station, an impressive mural depicts the prehispanic city of Tenochtitlán.

An Archaeological Wonder of Peru, and the largest stone ruin site in the New World.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

The largest cave in Northern Europe.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

This Underground station has been a popular filming location for decades, even before it closed.

These lesser-known Maltese catacombs date back over 1,700 years.

You can soak in three relaxing pools filled daily by the tide.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

This collection of solar timekeepers includes the world's first digital sundial.

A celebration of solstice followed by a fiery purging of evils.

An archeological treasure trove stumbled upon by a couple of children.

Seaside ruins of a settlement that date back to the first century B.C.