One of the most elaborate displays of Jellyfish is on display at the aquarium.

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

Something's missing between the arcades of the Palazzo della Ragione in "the city of the three withouts."

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

A hidden beach at the end of a tunnel of mangrove trees.

This strange statue features a bust of the famous composer plopped atop a woman's body.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

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

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A stunning hermit's shrine on a steep rocky spur in Northern Italy.

Washington's iconic carousel has a nice piece of Civil Rights history.

The Slovenian architect designed many landmarks in the capital city, including his own dream house.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

The venerated body of a 12th century saint is celebrated each year with the 'Race of the Candles.'

A climbing route in the mountains of Italy’s Dolomites, built for soldiers during World War I.

The unbelievably opulent home built for an infamous newspaperman.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

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

A herd of 150 bison live on California's Santa Catalina Island and are at the heart of an ongoing debate between environmental protection and economic expansion.