Tokyo Tower is 333 m tall. The Main Deck is at 150 m. The Top Deck at 250 m is a tour you add on, and the Tokyo Diamond Tour also includes a lounge visit.
Tokyo Tower at night. Photo by the site owner.
Good to know
Main Deck only is the simplest ticket. Main Deck plus Top Deck adds the higher level on a timed tour.
The tower is lit at night, so a late slot lets you see the city in daylight, at sunset and after dark if you stay a while.
Cancellation rules differ by option. Some tickets cannot be changed or refunded, so read them before you pay.
From Akabanebashi Station on the Toei Oedo Line it is about a 5 minute walk.