Bus Tours

Big Bus Hop on Hop off (this one I have used and is a great way to see the city.)

https://www.bigbustours.com/en/new-york/new-york-bus-tours

Double Decker bus tours.  Hop on Hop off bus picks up and drops off every 20mins or so. 

https://2094.partner.viator.com/tours/New-York-City/NYC-at-Night-Bus-Tour/d687-7081NYCNIGHT

NYC Must-See Highlights of Manhattan Bus Tour

https://2094.partner.viator.com/tours/New-York-City/New-York-Must-See-Combo-Tour/d687-5250P36

The RIDE: AN INTERACTIVE ENTERTAINMENT EXPERIENCE!

https://2094.partner.viator.com/tours/New-York-City/THE-RIDE-New-York-City/d687-5275RIDE

Other Tours

9/11 Memorial and Ground Zero Tour with optional 9/11 Museum Ticket

https://2094.partner.viator.com/tours/New-York-City/9-11-Memorial-and-Ground-Zero-Walking-Tour-with-Optional-9-11-Museum-Upgrade/d687-5250GROUNDZERO

The Friends Experience

https://friendstheexperience.com/new-york/

Sex and the City Hotspots Tour

https://2094.partner.viator.com/tours/New-York-City/Sex-and-the-City-Hotspots-Tour/d687-2218SEXCITY

Mobster, Gangstars, and Tough Guys: A Mafia Tour of Little Italy

https://2094.partner.viator.com/tours/New-York-City/New-York-Gangster-Experience-guided-by-a-Retired-NYPD-Police-Officer/d687-241402P1

New York Harbor Lights Cruise

https://2094.partner.viator.com/tours/New-York-City/Circle-Line-Harbor-Lights-Night-Cruise/d687-2800HLC

New York Dinner Cruise

https://2094.partner.viator.com/tours/New-York-City/New-York-Dinner-Cruise/d687-31001