The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

A daily replay of the experiment that proved the rotation of the Earth.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

Largest Roman Catholic church in North America.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

A massive Montreal stadium that has seen nothing but trouble since its inception.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Giant, friendly pelicans in Central London, the most unlikely of places.

One of the largest underground systems runs under Canada's largest urban center.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

A building so large that it has its own weather.

Electrical pylon in the shape of Disney's beloved mouse.

This bridge was constructed from the rubble of the infamous Bastille.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A bit of retro transportation flair preserved in the world's largest department store.

An artist's cute bronze subway sculptures belie his violent artistic past.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

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

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.