With urban real estate in hot demand, sometimes there's nowhere to build but up.
While New York boasts five of the top 10 tallest residential buildings in the country, Chicago is close behind with four.
The West, on the other hand, tends to keep its homes a little more down to earth. The tallest residential building on the West Coast, the tower of the L.A. Live entertainment complex -- which also includes two hotels, several restaurants, the Grammy Museum, two theaters and ESPN broadcasting studios -- tops out at 653 feet, 195 feet shorter than Two Liberty Place, the 10th-tallest residential building in the country.
These buildings don't skimp on amenities for their residents. Swimming pools and fitness centers are standard features, and several have maid and room service.
Prices in these luxurious towers can soar just as high as the buildings themselves. The penthouse in New York City's One57 sold last year for $100.5 million, making it the most expensive residence ever sold in the Big Apple.
So which buildings rise to the greatest heights? Click through to check out America's tallest residential buildings.
10. Two Liberty Place, Philadelphia
Two Liberty Place is the shorter of two towers built in downtown Philadelphia in the late 1980s. The 58-floor building rises 842 feet and features one- to three-bedroom luxury condominiums on floors 48 through 57. The building offers a doorman, concierge, fitness center, yoga studio, personal trainers, a pet spa, room service and maid service. The rest of the building is occupied by commercial offices.
Properties in the Skyline Collection on floors 48 through 53 start at $825,000, and properties in the Penthouse Collection on floors 54 through 57 start at $2 million.
Famous residents of the tower include Bon Jovi guitarist Richie Sambora, former Philadelphia Phillies pitcher Cole Hamels (currently with the Texas Rangers) and former Philadelphia 76ers player (currently with the Golden State Warriors) Andre Iguodala.
9. Water Tower Place, Chicago
Known to tourists for its eight-level shopping mall on Chicago's Magnificent Mile, this 859-foot, 74-floor tower of gray marble is also home to the Ritz-Carlton Hotel, some office space and 360 condominiums.
It was built in 1976, and the condo units were refurbished in 2001. Building amenities include 24-hour door staff and access to the Ritz-Carlton and Carlton Club, which has a spa, health club, private dining room, room service and catering.
Media mogul Oprah Winfrey was among the tower's sometimes-residents. She bought one unit in the building in 1985, followed by three other units above and next to it between 1992 and 1994, creating a customized duplex condominium unit. She sold the four units separately for a total of about $4.6 million.
Units currently for sale in the building range from about $1.7 million to about $2.75 million
8. Aqua, Chicago
This 859-foot tall skyscraper in downtown Chicago almost seems to be undulating before one's eyes, thanks to the irregularly-shaped cement balconies that create a wave-like effect. The 84-floor building was completed in 2009 and has an eighth floor terrace topped with gardens, a pool and hot tub, barbeque areas, a fire pit and a running track.
Indoor amenities include a fitness center, indoor pool, media center, basketball courts and underground parking.
The building houses the Radisson Blu Aqua hotel, along with retail and office spaces on the first 18 floors. Apartments occupy floors 19 through 52. Rent for the building's studio apartments starts at $1,555 per month. Two-bedroom apartments go as high as $4,967 per month.
Condominiums and penthouses occupy floors 53 through 80.
7. Trump World Tower, New York
This 861-foot tower of bronze-tinted glass at 845 United Nations Plaza was completed in 2001 and was the tallest all-residential building in the world until the 2003 completion of the 21st Century Tower in Dubai.
While the building has 72 floors, the elevator panels oddly list 90. Residents of the building's 376 condominiums have access to amenities including a health club, pool, garden, valet garage and private wine cellar.
Units currently for sale in the building range from about $1.5 million to $18.5 million. Bill Gates is among the building's current sometimes-residents.
6. New York By Gehry, New York
In addition to its 904 apartments, this 870-foot tower of glittering stainless steel and glass waves at 8 Spruce Street also houses a public school, a hospital and street-level retail space.
The building has 76 floors and was completed in 2010. The school occupies the first five floors and has a fourth-floor deck with outdoor play space for its roughly 600 students.
Residents of the tower have access to amenities such as a swimming pool with sun deck, spa suite, private dining room, group fitness studio, boxing studio, library, screening room, children's play room and a grilling terrace with dining cabana.
Rent for available units ranges from about $3,300 per month for a studio to more than $8,300 per month for a two-bedroom unit.
5. 70 Pine Street, New York
This art deco high rise, formerly known as the American International Building, stands 952 feet tall, with 644 residential apartments and a 132-room extended-stay hotel.
The tower was competed in 1932 and at the time was the third-tallest building in the world, just behind the Empire State Building and the Chrysler Building. It was built to house offices, but in 2012 a developer announced plans to transform them into condominiums.
The City Collection of condos on floors 11 through 31 are now available, while the Tower Collection on floors 32 through 54 and Penthouse Collection on the upper floors are still listed as "Coming Soon" on the developer's website.
Residents of 70 Pine Street have access to amenities including a fitness and wellness center, rooftop restaurant, coffee shop, full-service market and children's playroom.
4. One57, New York
The sleek glass tower of One57, located at 157 W. 57th St., is 1,005 feet tall and has 92 condominium units and the 210-room Park Hyatt Hotel.
The building was completed in 2014 and set a new record for the most expensive apartment ever sold in the city when the duplex occupying its top two floors was sold for more than $100 million in 2015.
Residents of One57 have views of Central Park along with amenities including an indoor pool, fitness center, screening and performance room, private dining room, library with a billiards table, 24-foot aquarium and a pet wash room. They can also access the Park Hyatt's amenities and services.
3. John Hancock Center, Chicago
The John Hancock Center, with its black tower and twin white antennae, is the tallest building along Chicago's lake shore. Located right next to Water Tower Place, the 1,127-foot building was completed in 1969 and has 100 floors of offices, retail spaces, restaurants and condominiums. An observatory on the 94th floor offers 360-degree views of the city and Lake Michigan.
Amenities for residents of the tower's 700 condos include a fitness center, indoor pool and in-building grocery store. Jerry Springer and Chris Farley have been among the tower's most well-known residents over time.
2. Trump International Hotel and Tower, Chicago
This 98-story glass building along the Chicago River was built in 2009 and is the city's second tallest at 1,389 feet tall. It houses a 339-room hotel and 486 residential condos.
The building's amenities include a pool, health club and spa. The building also has two restaurants and a bar.
Some of its more prominent residents include Chicago Blackhawks right winger Patrick Kane, Chicago Bulls point guard Derrick Rose and former McDonald's CEO Don Thompson.
1. 432 Park Avenue, New York
The newly completed skyscraper at 432 Park Avenue is the tallest all-residential building in the Western Hemisphere. It's 1,395 feet tall and has 85 floors, but only 106 residential units. Residents are expected to begin moving in this spring.
Building amenities include a golf training course, screening room, fitness center, pool, spa, lounge and billiards room.
The units range from studios to the top-floor, six-bedroom, seven-bathroom penthouse, which was already under agreement, although not officially sold, in 2013 -- two years before the building was completed -- for $95 million. It's the highest residence in New York City. Prices start at about $7 million.