The SKYDB website is currently experiencing issues as we are conducting updates
SKYDB

SKYDB Building database

Tall buildings worldwide, with heights, construction status and the companies involved.

Rankings of tall buildings

Tall Building Markets

  • Global building statistics
  • Biggest cities worldwide
  • Country market overviews
  • Construction activity
  • Annual completions
Speaker at a lectern in front of a skyscraper presentation

SKYDB Awards

The community is honoring the best new skyscrapers. A legacy since 1999.

View award winners

SKYDB Membership

Create a free account, choose Premium or apply to contribute as a volunteering Editor.

Choose your access

SKYDB Community

SKYDB Editors visiting a skyscraper construction site

Join for free

Become a volunteering Editor optionally or get Editor rights with Premium.

Compare memberships

SKYDB Products

Professional building research, data exports and API access, plus advertising offerings.

Research & data

Consulting & advertising

SKYDB Insights charts showing buildings by decade, status, use, floor count and height

SKYDB Insights

Professional research into buildings and participating companies.

View Insights plans

Tall buildings, tracked.

SKYDB is collecting verifiable information about buildings.

About SKYDB

Using SKYDB

Chongqing skyline beside the river

Who we are

SKYDB is the source for tall building information worldwide.

About SKYDB

Interactive building map

Explore all projects on an interactive map anywhere on earth.

Free map access

Upgrade your map experience

SKYDB map with building pins and a building record in Lower Manhattan

Join SKYDB

The map is for registered members. Create a free account to explore.

Create a free account

Rankings of tall buildings

World’s tallest skyscrapersTallest under constructionTallest planned buildingsBiggest citiesBiggest countries

Tall Building Markets

Global building statisticsBiggest cities worldwideCountry market overviewsConstruction activityAnnual completions

Tall buildings worldwide, with heights, construction status and the companies involved.

Speaker at a lectern in front of a skyscraper presentationView award winners

Research & data

Research with SKYDB InsightsData ExportsAPI AccessCreditsInteractive building map

Consulting & advertising

ConsultingSKYDB BrandingBanner advertisingContact SKYDBInsights questions & answers

Professional building research, data exports and API access, plus advertising offerings.

SKYDB Insights charts showing buildings by decade, status, use, floor count and heightView Insights plans

About SKYDB

Who we areTeam and editorsSKYDB AwardsNewsletterContact

Using SKYDB

Coverage and focusSources and qualityHow to add contentDefinitions and standardsKnowledge base

SKYDB is collecting verifiable information about buildings.

Chongqing skyline beside the riverAbout SKYDB

Panorama of Philadelphia File 020-522-095

Philadelphia city

structure #841307299building

Penn Mutual Tower

existing 114.3 m 20 floors 1975

Full map Join SKYDB
Location of Penn Mutual Tower
Height Rankings

Object dataJoin to edit

Tip Height114.3 m
Architectural Height114.3 m
Roof Height114.3 m
Floors20
Completion1975
Structural Formskyscraper
Main Usagecommercial office
Status existing
Architectural Stylebrutalist
Address508-510 Walnut Street
Smart Address508–510 Walnut Street
1st Level DistrictCenter City
2nd Level DistrictSociety Hill
CityPhiladelphia
CountryUnited States
Source: SKYDB | As of: 2026-09-24

Location

Full MapGoogle MapsBing Maps

Rating

The rating reflects architectural quality and visual impact as judged by SKYDB users, and feeds into how this building is ranked across the site.

Files Join to upload

  1. Photo 619-021-252
    Photo 619-021-252
    John W. Cahill
  2. Photo 349-111-473
    Photo 349-111-473
    John W. Cahill
  3. Photo 319-496-855
    Photo 319-496-855
    John W. Cahill
  4. Photo 504-203-400
    Photo 504-203-400
    John W. Cahill
  5. Photo 699-318-465
    Photo 699-318-465
    John W. Cahill
  6. Photo 511-148-812
    Photo 511-148-812
    John W. Cahill
  7. Photo 247-116-179
    Photo 247-116-179
    John W. Cahill
  8. Photo 274-850-418
    Photo 274-850-418
    John W. Cahill