Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

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

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

Yale University's home for rare works, including the mysterious Voynich Manuscript.

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.

A quirky assortment of musical marvels from around the world.

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.

The site of the climactic scene from the classic horror film is now a historic landmark.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Macabre astrological automaton clock dating to the late 1400s.

Dr Barnes' $25 billion private collection of art and arboretum.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

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

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Highly spherical boulders on the shores of New Zealand.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Tubing through a cave lit with glowworms is a magical underground experience.

This strange geological landscape erupts with sudden bursts of water.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

This Scottish bridge seems to compel dogs to leap to their death.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.