Harry Houdini plunged into the Charles River and performed one of his escape acts here in 1908.

One of the now-less-hidden floral gems of the "Emerald Necklace."

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

One of the oldest still-working clocks in the world sits on an ancient tower.

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

Go inside to really appreciate this 500-year-old technological masterpiece.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

The ancient latrines of the Greeks, in all their public glory.

A charming beach town in Turkey captures all the colors of the rainbow.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

This stone tower was built to protect Crete from incoming pirates.

One of the best-preserved medieval streets in Europe.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Legend says this sacred tree was a gift from goddess Athena.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Catch raucous live performances of traditional tunes at this old-school taverna.

Beach instrument turned bed and breakfast.

An island graveyard with spectacular views of the Caribbean.

Send a postcard while vacationing with Satan.

An inconspicuous footbridge beloved by San Diego locals.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

Built for an exposition in 1915, these horticultural displays have stood the test of time.