This replica of the Greek structure is in the heart of Nashville.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A controversial memorial at the place where Captain Cook met his violent end.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

One of the largest underground systems runs under Canada's largest urban center.

This massive library holds what was once the largest book collection in the world.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

Hear the quietest sound from across the dome.

The rusting remains of the largest assembled WWII fleet on the West Coast.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

One of the ghostly stops along Route 66.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

This legendary city has been a tourist attraction for centuries.

Erotic art covers the walls of the largest ancient pleasure palace.

A sprawling collection of books and manuscripts about ancient Greece that would have put their famed libraries to shame.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

The modern birthplace of Irish freedom.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.