Pilgrimage site for star-crossed lovers.

A fairy tale castle in modern Rome.

The glowing blue Nymphaeum of Emperor Tiberius.

An enormous, inside-out glass globe built in 1935.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A terrific purveyor of natural history objects and curios.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

The summer home of the largest colony of bats in the world.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

Curios, scientific antiques, oddities for sale.

An environmental art installation inspired by farmhouses and crop circles.

A surprising collection of bronze faces beneath a bridge in Loveland.

It takes a nine-mile hike to reach these hot springs, but weary hikers are rewarded with stunning views and a warm soak.

This drive-by, rotating mini-gallery is nestled in the suburbs of Colorado.

A museum of natural history, Edwin Carter's original log cabin home and workshop houses taxidermy specimens.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

Central City celebrates its most famous madam by racing beds down Main Street.

Open-air cremations in Colorado's self-proclaimed spiritual mecca.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

A coal fire has been burning underground here since 1896.