The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A bizarre house filled with an astounding array of collections.

At 207 feet, one of the world's longest continuous escalators.

The most decorated dog of World War I is preserved in the Smithsonian.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

A Museum of Holography frozen in 1974.

An eccentric park and pool.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

These pretty kitties killed and ate as many as 135 railway workers.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A former major munitions plant that has been converted into a sprawling art space.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Meet manatees face-to-face at this zoo for native species.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The most visited, and possibly most controversial, museum in Germany.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A walk through the historic city center, under the streets of Seattle.

Portlandia is the second-largest copper repoussé statue in the United States.

The seamy, underground secrets of Portland's criminal past.