The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

This historic fort spans more the 300 years.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

This elaborate High Victorian Gothic structure is one of the world's few 16-sided buildings.

Go inside to really appreciate this 500-year-old technological masterpiece.

Venture into the past with an unlisted exhibit hall featuring extinct birds.

Featuring the largest CinemaScope screen in Pennsylvania, this drive-in has entertained moviegoers for more than half a century.

This elaborate towering structure was once famed for its revolutionary height.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

This beloved American snack was conceived by a hungry coal miner.

Stroll among more than 50 large-scale sculptures created by world-class artists.

This unique park is dedicated to a favorite locally born snack line.

This historic train station has been converted to a locomotive themed hotel.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This collection honors the iconic, and proudly American lighter that just won't quit.

An aptly-named street near the birthplace of the modern LGBT rights movement.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

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 pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Museum dedicated to the struggles of the disabled.

This overlooked gem outside Niagara Falls preserves and celebrates Iroquois culture.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

Baroque celebration of the end of the Great Plague of Vienna.