A castle inspired by medieval architecture is hidden in the woods of Connecticut.

This classic steam-powered train takes tourists on a nostalgic trip around the Connecticut River Valley.

It looks like a whale, it's part of Yale, and it's best-known by a nickname you can probably work out for yourself.

This petite park lets visitors see and touch examples of fossilized dinosaur tracks.

This opera house along the banks of the Connecticut River has two Tony Awards to its credit but it’s never staged a single opera.

Public outcry led to this bridge's unique character which celebrates a giant frog battle and also sewing.

House used in the 1971 horror film "Let's Scare Jessica to Death."

An abandoned gun-funded 19th century utopia.

A miniature village lies nearly forgotten in the forest by the side of a major highway.

The headquarters of the famous Yale society.

Ruins of a historic medical facility sits eerily by the water.

This "thrice-cursed" island is allegedly home to Captain Kidd's lost treasure.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

Underground tunnels remain beneath this abandoned mental asylum.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

A toxic ghost town sitting atop a massive coal fire.

World's first "penitentiary," meant to be humane, drove men insane.

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